Home / 90,921.17-136,381.47-40,942.76

Finding the Fourth Proportional to 90,921.17, 136,381.47 and 40,942.76

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Solution

The fourth proportional to 90,921.17, 136,381.47 and 40,942.76 is: 61,414.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,921.17 : 136,381.47 = 40,942.76 : x
  2. Step 2: Convert to fraction form
    90,921.17/136,381.47 = 40,942.76/x
  3. Step 3: Cross multiply
    90,921.17x = 136,381.47 × 40,942.76
  4. Step 4: Simplify right side
    90,921.17x = 5,583,833,112.75
  5. Step 5: Solve for x
    x = 5,583,833,112.75/90,921.17
  6. Step 6: Final answer
    x = 61,414.01

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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.