Home / 80,470.36-120,703.48-38,380.20

Finding the Fourth Proportional to 80,470.36, 120,703.48 and 38,380.20

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Solution

The fourth proportional to 80,470.36, 120,703.48 and 38,380.20 is: 57,569.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,470.36 : 120,703.48 = 38,380.20 : x
  2. Step 2: Convert to fraction form
    80,470.36/120,703.48 = 38,380.20/x
  3. Step 3: Cross multiply
    80,470.36x = 120,703.48 × 38,380.20
  4. Step 4: Simplify right side
    80,470.36x = 4,632,623,703.10
  5. Step 5: Solve for x
    x = 4,632,623,703.10/80,470.36
  6. Step 6: Final answer
    x = 57,569.32

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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.