Home / 43,177.72-64,722.82-20,972.38

Finding the Fourth Proportional to 43,177.72, 64,722.82 and 20,972.38

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Solution

The fourth proportional to 43,177.72, 64,722.82 and 20,972.38 is: 31,437.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,177.72 : 64,722.82 = 20,972.38 : x
  2. Step 2: Convert to fraction form
    43,177.72/64,722.82 = 20,972.38/x
  3. Step 3: Cross multiply
    43,177.72x = 64,722.82 × 20,972.38
  4. Step 4: Simplify right side
    43,177.72x = 1,357,391,575.71
  5. Step 5: Solve for x
    x = 1,357,391,575.71/43,177.72
  6. Step 6: Final answer
    x = 31,437.31

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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.