Home / 87,783.68-121,101.72-55,932.76

Finding the Fourth Proportional to 87,783.68, 121,101.72 and 55,932.76

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Solution

The fourth proportional to 87,783.68, 121,101.72 and 55,932.76 is: 77,161.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,783.68 : 121,101.72 = 55,932.76 : x
  2. Step 2: Convert to fraction form
    87,783.68/121,101.72 = 55,932.76/x
  3. Step 3: Cross multiply
    87,783.68x = 121,101.72 × 55,932.76
  4. Step 4: Simplify right side
    87,783.68x = 6,773,553,381.98
  5. Step 5: Solve for x
    x = 6,773,553,381.98/87,783.68
  6. Step 6: Final answer
    x = 77,161.87

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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.