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Finding the Fourth Proportional to 79,355.60, 119,120.88 and 39,902.12

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Solution

The fourth proportional to 79,355.60, 119,120.88 and 39,902.12 is: 59,897.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,355.60 : 119,120.88 = 39,902.12 : x
  2. Step 2: Convert to fraction form
    79,355.60/119,120.88 = 39,902.12/x
  3. Step 3: Cross multiply
    79,355.60x = 119,120.88 × 39,902.12
  4. Step 4: Simplify right side
    79,355.60x = 4,753,175,648.27
  5. Step 5: Solve for x
    x = 4,753,175,648.27/79,355.60
  6. Step 6: Final answer
    x = 59,897.17

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1.5x scale

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.