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Finding the Fourth Proportional to 72,495.60, 108,962.10 and 62,872.80

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Solution

The fourth proportional to 72,495.60, 108,962.10 and 62,872.80 is: 94,498.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,495.60 : 108,962.10 = 62,872.80 : x
  2. Step 2: Convert to fraction form
    72,495.60/108,962.10 = 62,872.80/x
  3. Step 3: Cross multiply
    72,495.60x = 108,962.10 × 62,872.80
  4. Step 4: Simplify right side
    72,495.60x = 6,850,752,320.88
  5. Step 5: Solve for x
    x = 6,850,752,320.88/72,495.60
  6. Step 6: Final answer
    x = 94,498.87

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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.