Home / 87,761.64-121,111.66-53,770.20

Finding the Fourth Proportional to 87,761.64, 121,111.66 and 53,770.20

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Solution

The fourth proportional to 87,761.64, 121,111.66 and 53,770.20 is: 74,203.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,761.64 : 121,111.66 = 53,770.20 : x
  2. Step 2: Convert to fraction form
    87,761.64/121,111.66 = 53,770.20/x
  3. Step 3: Cross multiply
    87,761.64x = 121,111.66 × 53,770.20
  4. Step 4: Simplify right side
    87,761.64x = 6,512,198,180.53
  5. Step 5: Solve for x
    x = 6,512,198,180.53/87,761.64
  6. Step 6: Final answer
    x = 74,203.24

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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.