Home / 47,419.70-71,128.85-14,139.91

Finding the Fourth Proportional to 47,419.70, 71,128.85 and 14,139.91

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Solution

The fourth proportional to 47,419.70, 71,128.85 and 14,139.91 is: 21,209.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,419.70 : 71,128.85 = 14,139.91 : x
  2. Step 2: Convert to fraction form
    47,419.70/71,128.85 = 14,139.91/x
  3. Step 3: Cross multiply
    47,419.70x = 71,128.85 × 14,139.91
  4. Step 4: Simplify right side
    47,419.70x = 1,005,755,288.88
  5. Step 5: Solve for x
    x = 1,005,755,288.88/47,419.70
  6. Step 6: Final answer
    x = 21,209.65

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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.