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Finding the Fourth Proportional to 73,310.80, 109,966.20 and 65,000.20

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Solution

The fourth proportional to 73,310.80, 109,966.20 and 65,000.20 is: 97,500.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,310.80 : 109,966.20 = 65,000.20 : x
  2. Step 2: Convert to fraction form
    73,310.80/109,966.20 = 65,000.20/x
  3. Step 3: Cross multiply
    73,310.80x = 109,966.20 × 65,000.20
  4. Step 4: Simplify right side
    73,310.80x = 7,147,824,993.24
  5. Step 5: Solve for x
    x = 7,147,824,993.24/73,310.80
  6. Step 6: Final answer
    x = 97,500.30

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Similar ratio
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1.5x scale

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.