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Finding the Fourth Proportional to 66,207.60, 99,311.40 and 54,932.40

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Solution

The fourth proportional to 66,207.60, 99,311.40 and 54,932.40 is: 82,398.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,207.60 : 99,311.40 = 54,932.40 : x
  2. Step 2: Convert to fraction form
    66,207.60/99,311.40 = 54,932.40/x
  3. Step 3: Cross multiply
    66,207.60x = 99,311.40 × 54,932.40
  4. Step 4: Simplify right side
    66,207.60x = 5,455,413,549.36
  5. Step 5: Solve for x
    x = 5,455,413,549.36/66,207.60
  6. Step 6: Final answer
    x = 82,398.60

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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.