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Finding the Fourth Proportional to 91,362.71, 126,082.30 and 51,079.39

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Solution

The fourth proportional to 91,362.71, 126,082.30 and 51,079.39 is: 70,490.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,362.71 : 126,082.30 = 51,079.39 : x
  2. Step 2: Convert to fraction form
    91,362.71/126,082.30 = 51,079.39/x
  3. Step 3: Cross multiply
    91,362.71x = 126,082.30 × 51,079.39
  4. Step 4: Simplify right side
    91,362.71x = 6,440,206,973.80
  5. Step 5: Solve for x
    x = 6,440,206,973.80/91,362.71
  6. Step 6: Final answer
    x = 70,490.54

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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.