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Finding the Fourth Proportional to 57,360, 86,008.32 and 38,639.04

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Solution

The fourth proportional to 57,360, 86,008.32 and 38,639.04 is: 57,937.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,360 : 86,008.32 = 38,639.04 : x
  2. Step 2: Convert to fraction form
    57,360/86,008.32 = 38,639.04/x
  3. Step 3: Cross multiply
    57,360x = 86,008.32 × 38,639.04
  4. Step 4: Simplify right side
    57,360x = 3,323,278,916.81
  5. Step 5: Solve for x
    x = 3,323,278,916.81/57,360
  6. Step 6: Final answer
    x = 57,937.22

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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.