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Finding the Fourth Proportional to 67,747.80, 101,427.30 and 65,803.80

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Solution

The fourth proportional to 67,747.80, 101,427.30 and 65,803.80 is: 98,516.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,747.80 : 101,427.30 = 65,803.80 : x
  2. Step 2: Convert to fraction form
    67,747.80/101,427.30 = 65,803.80/x
  3. Step 3: Cross multiply
    67,747.80x = 101,427.30 × 65,803.80
  4. Step 4: Simplify right side
    67,747.80x = 6,674,301,763.74
  5. Step 5: Solve for x
    x = 6,674,301,763.74/67,747.80
  6. Step 6: Final answer
    x = 98,516.88

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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.