Home / 42,712.92-64,023.75-21,668.45

Finding the Fourth Proportional to 42,712.92, 64,023.75 and 21,668.45

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Solution

The fourth proportional to 42,712.92, 64,023.75 and 21,668.45 is: 32,479.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,712.92 : 64,023.75 = 21,668.45 : x
  2. Step 2: Convert to fraction form
    42,712.92/64,023.75 = 21,668.45/x
  3. Step 3: Cross multiply
    42,712.92x = 64,023.75 × 21,668.45
  4. Step 4: Simplify right side
    42,712.92x = 1,387,295,105.57
  5. Step 5: Solve for x
    x = 1,387,295,105.57/42,712.92
  6. Step 6: Final answer
    x = 32,479.52

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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.