Home / 47,742.12-71,614.38-12,681.72

Finding the Fourth Proportional to 47,742.12, 71,614.38 and 12,681.72

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Solution

The fourth proportional to 47,742.12, 71,614.38 and 12,681.72 is: 19,022.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,742.12 : 71,614.38 = 12,681.72 : x
  2. Step 2: Convert to fraction form
    47,742.12/71,614.38 = 12,681.72/x
  3. Step 3: Cross multiply
    47,742.12x = 71,614.38 × 12,681.72
  4. Step 4: Simplify right side
    47,742.12x = 908,193,515.13
  5. Step 5: Solve for x
    x = 908,193,515.13/47,742.12
  6. Step 6: Final answer
    x = 19,022.90

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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.