Home / 43,590.30-65,385.45-21,417.90

Finding the Fourth Proportional to 43,590.30, 65,385.45 and 21,417.90

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Solution

The fourth proportional to 43,590.30, 65,385.45 and 21,417.90 is: 32,126.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,590.30 : 65,385.45 = 21,417.90 : x
  2. Step 2: Convert to fraction form
    43,590.30/65,385.45 = 21,417.90/x
  3. Step 3: Cross multiply
    43,590.30x = 65,385.45 × 21,417.90
  4. Step 4: Simplify right side
    43,590.30x = 1,400,419,029.56
  5. Step 5: Solve for x
    x = 1,400,419,029.56/43,590.30
  6. Step 6: Final answer
    x = 32,126.85

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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.