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Finding the Fourth Proportional to 73,257.80, 109,886.70 and 66,000.20

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Solution

The fourth proportional to 73,257.80, 109,886.70 and 66,000.20 is: 99,000.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,257.80 : 109,886.70 = 66,000.20 : x
  2. Step 2: Convert to fraction form
    73,257.80/109,886.70 = 66,000.20/x
  3. Step 3: Cross multiply
    73,257.80x = 109,886.70 × 66,000.20
  4. Step 4: Simplify right side
    73,257.80x = 7,252,544,177.34
  5. Step 5: Solve for x
    x = 7,252,544,177.34/73,257.80
  6. Step 6: Final answer
    x = 99,000.30

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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.