Home / 40,078.13-60,117.12-15,123.78

Finding the Fourth Proportional to 40,078.13, 60,117.12 and 15,123.78

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Solution

The fourth proportional to 40,078.13, 60,117.12 and 15,123.78 is: 22,685.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,078.13 : 60,117.12 = 15,123.78 : x
  2. Step 2: Convert to fraction form
    40,078.13/60,117.12 = 15,123.78/x
  3. Step 3: Cross multiply
    40,078.13x = 60,117.12 × 15,123.78
  4. Step 4: Simplify right side
    40,078.13x = 909,198,097.11
  5. Step 5: Solve for x
    x = 909,198,097.11/40,078.13
  6. Step 6: Final answer
    x = 22,685.64

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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.