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Finding the Fourth Proportional to 79,756.77, 119,670.34 and 42,307.66

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Solution

The fourth proportional to 79,756.77, 119,670.34 and 42,307.66 is: 63,480.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,756.77 : 119,670.34 = 42,307.66 : x
  2. Step 2: Convert to fraction form
    79,756.77/119,670.34 = 42,307.66/x
  3. Step 3: Cross multiply
    79,756.77x = 119,670.34 × 42,307.66
  4. Step 4: Simplify right side
    79,756.77x = 5,062,972,056.80
  5. Step 5: Solve for x
    x = 5,062,972,056.80/79,756.77
  6. Step 6: Final answer
    x = 63,480.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.