Home / 42,836.20-64,221.36-21,758.92

Finding the Fourth Proportional to 42,836.20, 64,221.36 and 21,758.92

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Solution

The fourth proportional to 42,836.20, 64,221.36 and 21,758.92 is: 32,621.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,836.20 : 64,221.36 = 21,758.92 : x
  2. Step 2: Convert to fraction form
    42,836.20/64,221.36 = 21,758.92/x
  3. Step 3: Cross multiply
    42,836.20x = 64,221.36 × 21,758.92
  4. Step 4: Simplify right side
    42,836.20x = 1,397,387,434.53
  5. Step 5: Solve for x
    x = 1,397,387,434.53/42,836.20
  6. Step 6: Final answer
    x = 32,621.65

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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.