Home / 87,787.83-121,146.80-47,502.30

Finding the Fourth Proportional to 87,787.83, 121,146.80 and 47,502.30

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Solution

The fourth proportional to 87,787.83, 121,146.80 and 47,502.30 is: 65,552.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,787.83 : 121,146.80 = 47,502.30 : x
  2. Step 2: Convert to fraction form
    87,787.83/121,146.80 = 47,502.30/x
  3. Step 3: Cross multiply
    87,787.83x = 121,146.80 × 47,502.30
  4. Step 4: Simplify right side
    87,787.83x = 5,754,751,637.64
  5. Step 5: Solve for x
    x = 5,754,751,637.64/87,787.83
  6. Step 6: Final answer
    x = 65,552.95

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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.