Home / 68,987.13-103,387.11-31,500.73

Finding the Fourth Proportional to 68,987.13, 103,387.11 and 31,500.73

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Solution

The fourth proportional to 68,987.13, 103,387.11 and 31,500.73 is: 47,208.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,987.13 : 103,387.11 = 31,500.73 : x
  2. Step 2: Convert to fraction form
    68,987.13/103,387.11 = 31,500.73/x
  3. Step 3: Cross multiply
    68,987.13x = 103,387.11 × 31,500.73
  4. Step 4: Simplify right side
    68,987.13x = 3,256,769,437.59
  5. Step 5: Solve for x
    x = 3,256,769,437.59/68,987.13
  6. Step 6: Final answer
    x = 47,208.36

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1.5x scale

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.