Home / 72,485,226.28-100,029,628.58-39,890,178.28

Finding the Fourth Proportional to 72,485,226.28, 100,029,628.58 and 39,890,178.28

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Solution

The fourth proportional to 72,485,226.28, 100,029,628.58 and 39,890,178.28 is: 55,048,455.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,485,226.28 : 100,029,628.58 = 39,890,178.28 : x
  2. Step 2: Convert to fraction form
    72,485,226.28/100,029,628.58 = 39,890,178.28/x
  3. Step 3: Cross multiply
    72,485,226.28x = 100,029,628.58 × 39,890,178.28
  4. Step 4: Simplify right side
    72,485,226.28x = 3,990,199,717,338,383.50
  5. Step 5: Solve for x
    x = 3,990,199,717,338,383.50/72,485,226.28
  6. Step 6: Final answer
    x = 55,048,455.00

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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.