Home / 90,553.59-135,799.63-31,375.45

Finding the Fourth Proportional to 90,553.59, 135,799.63 and 31,375.45

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Solution

The fourth proportional to 90,553.59, 135,799.63 and 31,375.45 is: 47,052.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,553.59 : 135,799.63 = 31,375.45 : x
  2. Step 2: Convert to fraction form
    90,553.59/135,799.63 = 31,375.45/x
  3. Step 3: Cross multiply
    90,553.59x = 135,799.63 × 31,375.45
  4. Step 4: Simplify right side
    90,553.59x = 4,260,774,501.08
  5. Step 5: Solve for x
    x = 4,260,774,501.08/90,553.59
  6. Step 6: Final answer
    x = 47,052.52

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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.