Home / 47,055.92-70,565.12-20,742

Finding the Fourth Proportional to 47,055.92, 70,565.12 and 20,742

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Solution

The fourth proportional to 47,055.92, 70,565.12 and 20,742 is: 31,104.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,055.92 : 70,565.12 = 20,742 : x
  2. Step 2: Convert to fraction form
    47,055.92/70,565.12 = 20,742/x
  3. Step 3: Cross multiply
    47,055.92x = 70,565.12 × 20,742
  4. Step 4: Simplify right side
    47,055.92x = 1,463,661,719.04
  5. Step 5: Solve for x
    x = 1,463,661,719.04/47,055.92
  6. Step 6: Final answer
    x = 31,104.73

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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.