Home / 87,839.20-121,210.40-52,023.20

Finding the Fourth Proportional to 87,839.20, 121,210.40 and 52,023.20

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Solution

The fourth proportional to 87,839.20, 121,210.40 and 52,023.20 is: 71,787.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,839.20 : 121,210.40 = 52,023.20 : x
  2. Step 2: Convert to fraction form
    87,839.20/121,210.40 = 52,023.20/x
  3. Step 3: Cross multiply
    87,839.20x = 121,210.40 × 52,023.20
  4. Step 4: Simplify right side
    87,839.20x = 6,305,752,881.28
  5. Step 5: Solve for x
    x = 6,305,752,881.28/87,839.20
  6. Step 6: Final answer
    x = 71,787.46

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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.