Home / 47,488.60-71,175.30-21,165.40

Finding the Fourth Proportional to 47,488.60, 71,175.30 and 21,165.40

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Solution

The fourth proportional to 47,488.60, 71,175.30 and 21,165.40 is: 31,722.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,488.60 : 71,175.30 = 21,165.40 : x
  2. Step 2: Convert to fraction form
    47,488.60/71,175.30 = 21,165.40/x
  3. Step 3: Cross multiply
    47,488.60x = 71,175.30 × 21,165.40
  4. Step 4: Simplify right side
    47,488.60x = 1,506,453,694.62
  5. Step 5: Solve for x
    x = 1,506,453,694.62/47,488.60
  6. Step 6: Final answer
    x = 31,722.43

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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.