Home / 91,910.97-137,862-28,730.57

Finding the Fourth Proportional to 91,910.97, 137,862 and 28,730.57

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Solution

The fourth proportional to 91,910.97, 137,862 and 28,730.57 is: 43,094.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,910.97 : 137,862 = 28,730.57 : x
  2. Step 2: Convert to fraction form
    91,910.97/137,862 = 28,730.57/x
  3. Step 3: Cross multiply
    91,910.97x = 137,862 × 28,730.57
  4. Step 4: Simplify right side
    91,910.97x = 3,960,853,152.03
  5. Step 5: Solve for x
    x = 3,960,853,152.03/91,910.97
  6. Step 6: Final answer
    x = 43,094.45

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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.