Home / 91,238.60-136,805.64-28,042.28

Finding the Fourth Proportional to 91,238.60, 136,805.64 and 28,042.28

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Solution

The fourth proportional to 91,238.60, 136,805.64 and 28,042.28 is: 42,047.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,238.60 : 136,805.64 = 28,042.28 : x
  2. Step 2: Convert to fraction form
    91,238.60/136,805.64 = 28,042.28/x
  3. Step 3: Cross multiply
    91,238.60x = 136,805.64 × 28,042.28
  4. Step 4: Simplify right side
    91,238.60x = 3,836,342,062.46
  5. Step 5: Solve for x
    x = 3,836,342,062.46/91,238.60
  6. Step 6: Final answer
    x = 42,047.36

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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.