Home / 87,001.16-120,119.45-66,821.97

Finding the Fourth Proportional to 87,001.16, 120,119.45 and 66,821.97

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Solution

The fourth proportional to 87,001.16, 120,119.45 and 66,821.97 is: 92,258.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,001.16 : 120,119.45 = 66,821.97 : x
  2. Step 2: Convert to fraction form
    87,001.16/120,119.45 = 66,821.97/x
  3. Step 3: Cross multiply
    87,001.16x = 120,119.45 × 66,821.97
  4. Step 4: Simplify right side
    87,001.16x = 8,026,617,950.21
  5. Step 5: Solve for x
    x = 8,026,617,950.21/87,001.16
  6. Step 6: Final answer
    x = 92,258.74

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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.