Home / 87,012.90-120,077.88-49,287.15

Finding the Fourth Proportional to 87,012.90, 120,077.88 and 49,287.15

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Solution

The fourth proportional to 87,012.90, 120,077.88 and 49,287.15 is: 68,016.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,012.90 : 120,077.88 = 49,287.15 : x
  2. Step 2: Convert to fraction form
    87,012.90/120,077.88 = 49,287.15/x
  3. Step 3: Cross multiply
    87,012.90x = 120,077.88 × 49,287.15
  4. Step 4: Simplify right side
    87,012.90x = 5,918,296,483.24
  5. Step 5: Solve for x
    x = 5,918,296,483.24/87,012.90
  6. Step 6: Final answer
    x = 68,016.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.