Home / 90,960.15-136,445.28-27,789.87

Finding the Fourth Proportional to 90,960.15, 136,445.28 and 27,789.87

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Solution

The fourth proportional to 90,960.15, 136,445.28 and 27,789.87 is: 41,686.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,960.15 : 136,445.28 = 27,789.87 : x
  2. Step 2: Convert to fraction form
    90,960.15/136,445.28 = 27,789.87/x
  3. Step 3: Cross multiply
    90,960.15x = 136,445.28 × 27,789.87
  4. Step 4: Simplify right side
    90,960.15x = 3,791,796,593.31
  5. Step 5: Solve for x
    x = 3,791,796,593.31/90,960.15
  6. Step 6: Final answer
    x = 41,686.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.