Home / 91,115.28-136,723.95-38,564.10

Finding the Fourth Proportional to 91,115.28, 136,723.95 and 38,564.10

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Solution

The fourth proportional to 91,115.28, 136,723.95 and 38,564.10 is: 57,867.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,115.28 : 136,723.95 = 38,564.10 : x
  2. Step 2: Convert to fraction form
    91,115.28/136,723.95 = 38,564.10/x
  3. Step 3: Cross multiply
    91,115.28x = 136,723.95 × 38,564.10
  4. Step 4: Simplify right side
    91,115.28x = 5,272,636,080.20
  5. Step 5: Solve for x
    x = 5,272,636,080.20/91,115.28
  6. Step 6: Final answer
    x = 57,867.75

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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.