Home / 90,873.19-136,331.34-28,543.69

Finding the Fourth Proportional to 90,873.19, 136,331.34 and 28,543.69

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Solution

The fourth proportional to 90,873.19, 136,331.34 and 28,543.69 is: 42,822.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,873.19 : 136,331.34 = 28,543.69 : x
  2. Step 2: Convert to fraction form
    90,873.19/136,331.34 = 28,543.69/x
  3. Step 3: Cross multiply
    90,873.19x = 136,331.34 × 28,543.69
  4. Step 4: Simplify right side
    90,873.19x = 3,891,399,506.24
  5. Step 5: Solve for x
    x = 3,891,399,506.24/90,873.19
  6. Step 6: Final answer
    x = 42,822.31

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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.