Home / 66,454.20-99,693.90-21,487.64

Finding the Fourth Proportional to 66,454.20, 99,693.90 and 21,487.64

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Solution

The fourth proportional to 66,454.20, 99,693.90 and 21,487.64 is: 32,235.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,454.20 : 99,693.90 = 21,487.64 : x
  2. Step 2: Convert to fraction form
    66,454.20/99,693.90 = 21,487.64/x
  3. Step 3: Cross multiply
    66,454.20x = 99,693.90 × 21,487.64
  4. Step 4: Simplify right side
    66,454.20x = 2,142,186,134.93
  5. Step 5: Solve for x
    x = 2,142,186,134.93/66,454.20
  6. Step 6: Final answer
    x = 32,235.53

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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.