Home / 84,475.30-126,741.12-28,321

Finding the Fourth Proportional to 84,475.30, 126,741.12 and 28,321

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Solution

The fourth proportional to 84,475.30, 126,741.12 and 28,321 is: 42,490.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,475.30 : 126,741.12 = 28,321 : x
  2. Step 2: Convert to fraction form
    84,475.30/126,741.12 = 28,321/x
  3. Step 3: Cross multiply
    84,475.30x = 126,741.12 × 28,321
  4. Step 4: Simplify right side
    84,475.30x = 3,589,435,259.52
  5. Step 5: Solve for x
    x = 3,589,435,259.52/84,475.30
  6. Step 6: Final answer
    x = 42,490.94

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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.