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Finding the Fourth Proportional to 67,065.30, 100,503.38 and 52,963.20

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Solution

The fourth proportional to 67,065.30, 100,503.38 and 52,963.20 is: 79,370.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,065.30 : 100,503.38 = 52,963.20 : x
  2. Step 2: Convert to fraction form
    67,065.30/100,503.38 = 52,963.20/x
  3. Step 3: Cross multiply
    67,065.30x = 100,503.38 × 52,963.20
  4. Step 4: Simplify right side
    67,065.30x = 5,322,980,748.02
  5. Step 5: Solve for x
    x = 5,322,980,748.02/67,065.30
  6. Step 6: Final answer
    x = 79,370.12

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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.