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Finding the Fourth Proportional to 80,304.72, 120,567.42 and 40,888.32

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Solution

The fourth proportional to 80,304.72, 120,567.42 and 40,888.32 is: 61,388.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,304.72 : 120,567.42 = 40,888.32 : x
  2. Step 2: Convert to fraction form
    80,304.72/120,567.42 = 40,888.32/x
  3. Step 3: Cross multiply
    80,304.72x = 120,567.42 × 40,888.32
  4. Step 4: Simplify right side
    80,304.72x = 4,929,799,250.53
  5. Step 5: Solve for x
    x = 4,929,799,250.53/80,304.72
  6. Step 6: Final answer
    x = 61,388.66

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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.