Home / 90,841.68-136,213.10-31,661.46

Finding the Fourth Proportional to 90,841.68, 136,213.10 and 31,661.46

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Solution

The fourth proportional to 90,841.68, 136,213.10 and 31,661.46 is: 47,474.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,841.68 : 136,213.10 = 31,661.46 : x
  2. Step 2: Convert to fraction form
    90,841.68/136,213.10 = 31,661.46/x
  3. Step 3: Cross multiply
    90,841.68x = 136,213.10 × 31,661.46
  4. Step 4: Simplify right side
    90,841.68x = 4,312,705,617.13
  5. Step 5: Solve for x
    x = 4,312,705,617.13/90,841.68
  6. Step 6: Final answer
    x = 47,474.97

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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.