Home / 31,452.12-47,178.18-8,078.58

Finding the Fourth Proportional to 31,452.12, 47,178.18 and 8,078.58

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Solution

The fourth proportional to 31,452.12, 47,178.18 and 8,078.58 is: 12,117.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,452.12 : 47,178.18 = 8,078.58 : x
  2. Step 2: Convert to fraction form
    31,452.12/47,178.18 = 8,078.58/x
  3. Step 3: Cross multiply
    31,452.12x = 47,178.18 × 8,078.58
  4. Step 4: Simplify right side
    31,452.12x = 381,132,701.38
  5. Step 5: Solve for x
    x = 381,132,701.38/31,452.12
  6. Step 6: Final answer
    x = 12,117.87

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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.