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Finding the Fourth Proportional to 112,629, 155,432.88 and 62,328

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Solution

The fourth proportional to 112,629, 155,432.88 and 62,328 is: 86,015.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,629 : 155,432.88 = 62,328 : x
  2. Step 2: Convert to fraction form
    112,629/155,432.88 = 62,328/x
  3. Step 3: Cross multiply
    112,629x = 155,432.88 × 62,328
  4. Step 4: Simplify right side
    112,629x = 9,687,820,544.64
  5. Step 5: Solve for x
    x = 9,687,820,544.64/112,629
  6. Step 6: Final answer
    x = 86,015.33

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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.