Home / 91,711.20-126,587.70-54,007.32

Finding the Fourth Proportional to 91,711.20, 126,587.70 and 54,007.32

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Solution

The fourth proportional to 91,711.20, 126,587.70 and 54,007.32 is: 74,545.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,711.20 : 126,587.70 = 54,007.32 : x
  2. Step 2: Convert to fraction form
    91,711.20/126,587.70 = 54,007.32/x
  3. Step 3: Cross multiply
    91,711.20x = 126,587.70 × 54,007.32
  4. Step 4: Simplify right side
    91,711.20x = 6,836,662,421.96
  5. Step 5: Solve for x
    x = 6,836,662,421.96/91,711.20
  6. Step 6: Final answer
    x = 74,545.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.