Home / 80,566.40-120,849.60-21,411.20

Finding the Fourth Proportional to 80,566.40, 120,849.60 and 21,411.20

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Solution

The fourth proportional to 80,566.40, 120,849.60 and 21,411.20 is: 32,116.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,566.40 : 120,849.60 = 21,411.20 : x
  2. Step 2: Convert to fraction form
    80,566.40/120,849.60 = 21,411.20/x
  3. Step 3: Cross multiply
    80,566.40x = 120,849.60 × 21,411.20
  4. Step 4: Simplify right side
    80,566.40x = 2,587,534,955.52
  5. Step 5: Solve for x
    x = 2,587,534,955.52/80,566.40
  6. Step 6: Final answer
    x = 32,116.80

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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.