Home / 60,139.29-90,207.96-20,696.76

Finding the Fourth Proportional to 60,139.29, 90,207.96 and 20,696.76

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Solution

The fourth proportional to 60,139.29, 90,207.96 and 20,696.76 is: 31,044.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,139.29 : 90,207.96 = 20,696.76 : x
  2. Step 2: Convert to fraction form
    60,139.29/90,207.96 = 20,696.76/x
  3. Step 3: Cross multiply
    60,139.29x = 90,207.96 × 20,696.76
  4. Step 4: Simplify right side
    60,139.29x = 1,867,012,498.21
  5. Step 5: Solve for x
    x = 1,867,012,498.21/60,139.29
  6. Step 6: Final answer
    x = 31,044.80

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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.