Home / 90,832.78-136,271.19-28,503.28

Finding the Fourth Proportional to 90,832.78, 136,271.19 and 28,503.28

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Solution

The fourth proportional to 90,832.78, 136,271.19 and 28,503.28 is: 42,761.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,832.78 : 136,271.19 = 28,503.28 : x
  2. Step 2: Convert to fraction form
    90,832.78/136,271.19 = 28,503.28/x
  3. Step 3: Cross multiply
    90,832.78x = 136,271.19 × 28,503.28
  4. Step 4: Simplify right side
    90,832.78x = 3,884,176,161.73
  5. Step 5: Solve for x
    x = 3,884,176,161.73/90,832.78
  6. Step 6: Final answer
    x = 42,761.83

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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.