Home / 87,787.32-121,146.11-47,501.79

Finding the Fourth Proportional to 87,787.32, 121,146.11 and 47,501.79

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Solution

The fourth proportional to 87,787.32, 121,146.11 and 47,501.79 is: 65,552.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,787.32 : 121,146.11 = 47,501.79 : x
  2. Step 2: Convert to fraction form
    87,787.32/121,146.11 = 47,501.79/x
  3. Step 3: Cross multiply
    87,787.32x = 121,146.11 × 47,501.79
  4. Step 4: Simplify right side
    87,787.32x = 5,754,657,076.54
  5. Step 5: Solve for x
    x = 5,754,657,076.54/87,787.32
  6. Step 6: Final answer
    x = 65,552.26

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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.