Home / 91,578.15-137,386.96-28,397

Finding the Fourth Proportional to 91,578.15, 137,386.96 and 28,397

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Solution

The fourth proportional to 91,578.15, 137,386.96 and 28,397 is: 42,601.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,578.15 : 137,386.96 = 28,397 : x
  2. Step 2: Convert to fraction form
    91,578.15/137,386.96 = 28,397/x
  3. Step 3: Cross multiply
    91,578.15x = 137,386.96 × 28,397
  4. Step 4: Simplify right side
    91,578.15x = 3,901,377,503.12
  5. Step 5: Solve for x
    x = 3,901,377,503.12/91,578.15
  6. Step 6: Final answer
    x = 42,601.62

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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.