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Finding the Fourth Proportional to 62,585.68, 86,299.12 and 39,888.80

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Solution

The fourth proportional to 62,585.68, 86,299.12 and 39,888.80 is: 55,002.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,585.68 : 86,299.12 = 39,888.80 : x
  2. Step 2: Convert to fraction form
    62,585.68/86,299.12 = 39,888.80/x
  3. Step 3: Cross multiply
    62,585.68x = 86,299.12 × 39,888.80
  4. Step 4: Simplify right side
    62,585.68x = 3,442,368,337.86
  5. Step 5: Solve for x
    x = 3,442,368,337.86/62,585.68
  6. Step 6: Final answer
    x = 55,002.49

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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.