Home / 75,432.40-113,148.57-19,272.61

Finding the Fourth Proportional to 75,432.40, 113,148.57 and 19,272.61

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Solution

The fourth proportional to 75,432.40, 113,148.57 and 19,272.61 is: 28,908.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,432.40 : 113,148.57 = 19,272.61 : x
  2. Step 2: Convert to fraction form
    75,432.40/113,148.57 = 19,272.61/x
  3. Step 3: Cross multiply
    75,432.40x = 113,148.57 × 19,272.61
  4. Step 4: Simplify right side
    75,432.40x = 2,180,668,261.67
  5. Step 5: Solve for x
    x = 2,180,668,261.67/75,432.40
  6. Step 6: Final answer
    x = 28,908.91

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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.