Home / 42,140.60-57,975.18-40,974.20

Finding the Fourth Proportional to 42,140.60, 57,975.18 and 40,974.20

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Solution

The fourth proportional to 42,140.60, 57,975.18 and 40,974.20 is: 56,370.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,140.60 : 57,975.18 = 40,974.20 : x
  2. Step 2: Convert to fraction form
    42,140.60/57,975.18 = 40,974.20/x
  3. Step 3: Cross multiply
    42,140.60x = 57,975.18 × 40,974.20
  4. Step 4: Simplify right side
    42,140.60x = 2,375,486,620.36
  5. Step 5: Solve for x
    x = 2,375,486,620.36/42,140.60
  6. Step 6: Final answer
    x = 56,370.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.