Home / 91,331.48-137,010.13-28,156.75

Finding the Fourth Proportional to 91,331.48, 137,010.13 and 28,156.75

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Solution

The fourth proportional to 91,331.48, 137,010.13 and 28,156.75 is: 42,239.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,331.48 : 137,010.13 = 28,156.75 : x
  2. Step 2: Convert to fraction form
    91,331.48/137,010.13 = 28,156.75/x
  3. Step 3: Cross multiply
    91,331.48x = 137,010.13 × 28,156.75
  4. Step 4: Simplify right side
    91,331.48x = 3,857,759,723.34
  5. Step 5: Solve for x
    x = 3,857,759,723.34/91,331.48
  6. Step 6: Final answer
    x = 42,239.10

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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.