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Finding the Fourth Proportional to 65,400.80, 97,874.40 and 39,124.40

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Solution

The fourth proportional to 65,400.80, 97,874.40 and 39,124.40 is: 58,550.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,400.80 : 97,874.40 = 39,124.40 : x
  2. Step 2: Convert to fraction form
    65,400.80/97,874.40 = 39,124.40/x
  3. Step 3: Cross multiply
    65,400.80x = 97,874.40 × 39,124.40
  4. Step 4: Simplify right side
    65,400.80x = 3,829,277,175.36
  5. Step 5: Solve for x
    x = 3,829,277,175.36/65,400.80
  6. Step 6: Final answer
    x = 58,550.92

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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.