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Finding the Fourth Proportional to 112,770, 155,622.60 and 62,472.24

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Solution

The fourth proportional to 112,770, 155,622.60 and 62,472.24 is: 86,211.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,770 : 155,622.60 = 62,472.24 : x
  2. Step 2: Convert to fraction form
    112,770/155,622.60 = 62,472.24/x
  3. Step 3: Cross multiply
    112,770x = 155,622.60 × 62,472.24
  4. Step 4: Simplify right side
    112,770x = 9,722,092,416.62
  5. Step 5: Solve for x
    x = 9,722,092,416.62/112,770
  6. Step 6: Final answer
    x = 86,211.69

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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.