Home / 90,872.64-136,314.40-28,543.14

Finding the Fourth Proportional to 90,872.64, 136,314.40 and 28,543.14

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Solution

The fourth proportional to 90,872.64, 136,314.40 and 28,543.14 is: 42,816.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,872.64 : 136,314.40 = 28,543.14 : x
  2. Step 2: Convert to fraction form
    90,872.64/136,314.40 = 28,543.14/x
  3. Step 3: Cross multiply
    90,872.64x = 136,314.40 × 28,543.14
  4. Step 4: Simplify right side
    90,872.64x = 3,890,841,003.22
  5. Step 5: Solve for x
    x = 3,890,841,003.22/90,872.64
  6. Step 6: Final answer
    x = 42,816.42

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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.