Home / 79,620,717,838.81-109,876,586,415.42-42,998,829,666.81

Finding the Fourth Proportional to 79,620,717,838.81, 109,876,586,415.42 and 42,998,829,666.81

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Solution

The fourth proportional to 79,620,717,838.81, 109,876,586,415.42 and 42,998,829,666.81 is: 59,338,382,670.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,620,717,838.81 : 109,876,586,415.42 = 42,998,829,666.81 : x
  2. Step 2: Convert to fraction form
    79,620,717,838.81/109,876,586,415.42 = 42,998,829,666.81/x
  3. Step 3: Cross multiply
    79,620,717,838.81x = 109,876,586,415.42 × 42,998,829,666.81
  4. Step 4: Simplify right side
    79,620,717,838.81x = 4,724,564,623,647,173,509,120
  5. Step 5: Solve for x
    x = 4,724,564,623,647,173,509,120/79,620,717,838.81
  6. Step 6: Final answer
    x = 59,338,382,670.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.