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Finding the Fourth Proportional to 80,693.80, 121,040.70 and 62,031.40

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Solution

The fourth proportional to 80,693.80, 121,040.70 and 62,031.40 is: 93,047.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,693.80 : 121,040.70 = 62,031.40 : x
  2. Step 2: Convert to fraction form
    80,693.80/121,040.70 = 62,031.40/x
  3. Step 3: Cross multiply
    80,693.80x = 121,040.70 × 62,031.40
  4. Step 4: Simplify right side
    80,693.80x = 7,508,324,077.98
  5. Step 5: Solve for x
    x = 7,508,324,077.98/80,693.80
  6. Step 6: Final answer
    x = 93,047.10

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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.