Home / 75,621.60-113,432.40-40,543.20

Finding the Fourth Proportional to 75,621.60, 113,432.40 and 40,543.20

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Solution

The fourth proportional to 75,621.60, 113,432.40 and 40,543.20 is: 60,814.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,621.60 : 113,432.40 = 40,543.20 : x
  2. Step 2: Convert to fraction form
    75,621.60/113,432.40 = 40,543.20/x
  3. Step 3: Cross multiply
    75,621.60x = 113,432.40 × 40,543.20
  4. Step 4: Simplify right side
    75,621.60x = 4,598,912,479.68
  5. Step 5: Solve for x
    x = 4,598,912,479.68/75,621.60
  6. Step 6: Final answer
    x = 60,814.80

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1.5x scale

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.