Home / 91,428.95-137,143.43-38,801.53

Finding the Fourth Proportional to 91,428.95, 137,143.43 and 38,801.53

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Solution

The fourth proportional to 91,428.95, 137,143.43 and 38,801.53 is: 58,202.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,428.95 : 137,143.43 = 38,801.53 : x
  2. Step 2: Convert to fraction form
    91,428.95/137,143.43 = 38,801.53/x
  3. Step 3: Cross multiply
    91,428.95x = 137,143.43 × 38,801.53
  4. Step 4: Simplify right side
    91,428.95x = 5,321,375,036.38
  5. Step 5: Solve for x
    x = 5,321,375,036.38/91,428.95
  6. Step 6: Final answer
    x = 58,202.30

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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.