Home / 75,621.60-113,432.40-38,296.80

Finding the Fourth Proportional to 75,621.60, 113,432.40 and 38,296.80

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Solution

The fourth proportional to 75,621.60, 113,432.40 and 38,296.80 is: 57,445.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,621.60 : 113,432.40 = 38,296.80 : x
  2. Step 2: Convert to fraction form
    75,621.60/113,432.40 = 38,296.80/x
  3. Step 3: Cross multiply
    75,621.60x = 113,432.40 × 38,296.80
  4. Step 4: Simplify right side
    75,621.60x = 4,344,097,936.32
  5. Step 5: Solve for x
    x = 4,344,097,936.32/75,621.60
  6. Step 6: Final answer
    x = 57,445.20

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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.