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Finding the Fourth Proportional to 70,885.26, 106,348.67 and 20,966.69

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Solution

The fourth proportional to 70,885.26, 106,348.67 and 20,966.69 is: 31,456.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,885.26 : 106,348.67 = 20,966.69 : x
  2. Step 2: Convert to fraction form
    70,885.26/106,348.67 = 20,966.69/x
  3. Step 3: Cross multiply
    70,885.26x = 106,348.67 × 20,966.69
  4. Step 4: Simplify right side
    70,885.26x = 2,229,778,959.23
  5. Step 5: Solve for x
    x = 2,229,778,959.23/70,885.26
  6. Step 6: Final answer
    x = 31,456.17

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1.5x scale

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.