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Finding the Fourth Proportional to 71,544.60, 98,727.12 and 39,711.60

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Solution

The fourth proportional to 71,544.60, 98,727.12 and 39,711.60 is: 54,799.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,544.60 : 98,727.12 = 39,711.60 : x
  2. Step 2: Convert to fraction form
    71,544.60/98,727.12 = 39,711.60/x
  3. Step 3: Cross multiply
    71,544.60x = 98,727.12 × 39,711.60
  4. Step 4: Simplify right side
    71,544.60x = 3,920,611,898.59
  5. Step 5: Solve for x
    x = 3,920,611,898.59/71,544.60
  6. Step 6: Final answer
    x = 54,799.55

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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.