Home / 91,458.90-137,257.47-38,905.38

Finding the Fourth Proportional to 91,458.90, 137,257.47 and 38,905.38

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Solution

The fourth proportional to 91,458.90, 137,257.47 and 38,905.38 is: 58,387.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,458.90 : 137,257.47 = 38,905.38 : x
  2. Step 2: Convert to fraction form
    91,458.90/137,257.47 = 38,905.38/x
  3. Step 3: Cross multiply
    91,458.90x = 137,257.47 × 38,905.38
  4. Step 4: Simplify right side
    91,458.90x = 5,340,054,028.19
  5. Step 5: Solve for x
    x = 5,340,054,028.19/91,458.90
  6. Step 6: Final answer
    x = 58,387.47

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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.