Home / 87,015.66-120,077.55-49,290.18

Finding the Fourth Proportional to 87,015.66, 120,077.55 and 49,290.18

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Solution

The fourth proportional to 87,015.66, 120,077.55 and 49,290.18 is: 68,018.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,015.66 : 120,077.55 = 49,290.18 : x
  2. Step 2: Convert to fraction form
    87,015.66/120,077.55 = 49,290.18/x
  3. Step 3: Cross multiply
    87,015.66x = 120,077.55 × 49,290.18
  4. Step 4: Simplify right side
    87,015.66x = 5,918,644,053.46
  5. Step 5: Solve for x
    x = 5,918,644,053.46/87,015.66
  6. Step 6: Final answer
    x = 68,018.15

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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.