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Finding the Fourth Proportional to 112,725, 155,571.84 and 62,424

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Solution

The fourth proportional to 112,725, 155,571.84 and 62,424 is: 86,151.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,725 : 155,571.84 = 62,424 : x
  2. Step 2: Convert to fraction form
    112,725/155,571.84 = 62,424/x
  3. Step 3: Cross multiply
    112,725x = 155,571.84 × 62,424
  4. Step 4: Simplify right side
    112,725x = 9,711,416,540.16
  5. Step 5: Solve for x
    x = 9,711,416,540.16/112,725
  6. Step 6: Final answer
    x = 86,151.40

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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.