Home / 75,531.40-113,225.10-28,133.80

Finding the Fourth Proportional to 75,531.40, 113,225.10 and 28,133.80

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Solution

The fourth proportional to 75,531.40, 113,225.10 and 28,133.80 is: 42,173.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,531.40 : 113,225.10 = 28,133.80 : x
  2. Step 2: Convert to fraction form
    75,531.40/113,225.10 = 28,133.80/x
  3. Step 3: Cross multiply
    75,531.40x = 113,225.10 × 28,133.80
  4. Step 4: Simplify right side
    75,531.40x = 3,185,452,318.38
  5. Step 5: Solve for x
    x = 3,185,452,318.38/75,531.40
  6. Step 6: Final answer
    x = 42,173.88

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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.