Home / 75,475.40-113,141.10-28,077.80

Finding the Fourth Proportional to 75,475.40, 113,141.10 and 28,077.80

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Solution

The fourth proportional to 75,475.40, 113,141.10 and 28,077.80 is: 42,089.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,475.40 : 113,141.10 = 28,077.80 : x
  2. Step 2: Convert to fraction form
    75,475.40/113,141.10 = 28,077.80/x
  3. Step 3: Cross multiply
    75,475.40x = 113,141.10 × 28,077.80
  4. Step 4: Simplify right side
    75,475.40x = 3,176,753,177.58
  5. Step 5: Solve for x
    x = 3,176,753,177.58/75,475.40
  6. Step 6: Final answer
    x = 42,089.92

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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.