Home / 87,787.89-121,146.38-47,500.77

Finding the Fourth Proportional to 87,787.89, 121,146.38 and 47,500.77

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Solution

The fourth proportional to 87,787.89, 121,146.38 and 47,500.77 is: 65,550.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,787.89 : 121,146.38 = 47,500.77 : x
  2. Step 2: Convert to fraction form
    87,787.89/121,146.38 = 47,500.77/x
  3. Step 3: Cross multiply
    87,787.89x = 121,146.38 × 47,500.77
  4. Step 4: Simplify right side
    87,787.89x = 5,754,545,489.48
  5. Step 5: Solve for x
    x = 5,754,545,489.48/87,787.89
  6. Step 6: Final answer
    x = 65,550.56

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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.