Home / 101,515.47-152,287.79-31,400.25

Finding the Fourth Proportional to 101,515.47, 152,287.79 and 31,400.25

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Solution

The fourth proportional to 101,515.47, 152,287.79 and 31,400.25 is: 47,104.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,515.47 : 152,287.79 = 31,400.25 : x
  2. Step 2: Convert to fraction form
    101,515.47/152,287.79 = 31,400.25/x
  3. Step 3: Cross multiply
    101,515.47x = 152,287.79 × 31,400.25
  4. Step 4: Simplify right side
    101,515.47x = 4,781,874,520.95
  5. Step 5: Solve for x
    x = 4,781,874,520.95/101,515.47
  6. Step 6: Final answer
    x = 47,104.88

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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.