Home / 67,314.16-100,989.42-20,565.76

Finding the Fourth Proportional to 67,314.16, 100,989.42 and 20,565.76

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Solution

The fourth proportional to 67,314.16, 100,989.42 and 20,565.76 is: 30,854.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,314.16 : 100,989.42 = 20,565.76 : x
  2. Step 2: Convert to fraction form
    67,314.16/100,989.42 = 20,565.76/x
  3. Step 3: Cross multiply
    67,314.16x = 100,989.42 × 20,565.76
  4. Step 4: Simplify right side
    67,314.16x = 2,076,924,174.26
  5. Step 5: Solve for x
    x = 2,076,924,174.26/67,314.16
  6. Step 6: Final answer
    x = 30,854.19

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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.