Home / 42,853.01-64,306.07-20,668.61

Finding the Fourth Proportional to 42,853.01, 64,306.07 and 20,668.61

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Solution

The fourth proportional to 42,853.01, 64,306.07 and 20,668.61 is: 31,015.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,853.01 : 64,306.07 = 20,668.61 : x
  2. Step 2: Convert to fraction form
    42,853.01/64,306.07 = 20,668.61/x
  3. Step 3: Cross multiply
    42,853.01x = 64,306.07 × 20,668.61
  4. Step 4: Simplify right side
    42,853.01x = 1,329,117,081.46
  5. Step 5: Solve for x
    x = 1,329,117,081.46/42,853.01
  6. Step 6: Final answer
    x = 31,015.72

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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.