Home / 45,421.68-68,132.53-20,432.53

Finding the Fourth Proportional to 45,421.68, 68,132.53 and 20,432.53

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Solution

The fourth proportional to 45,421.68, 68,132.53 and 20,432.53 is: 30,648.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,421.68 : 68,132.53 = 20,432.53 : x
  2. Step 2: Convert to fraction form
    45,421.68/68,132.53 = 20,432.53/x
  3. Step 3: Cross multiply
    45,421.68x = 68,132.53 × 20,432.53
  4. Step 4: Simplify right side
    45,421.68x = 1,392,119,963.20
  5. Step 5: Solve for x
    x = 1,392,119,963.20/45,421.68
  6. Step 6: Final answer
    x = 30,648.80

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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.