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Finding the Fourth Proportional to 34,884.70, 48,139.88 and 19,778.76

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Solution

The fourth proportional to 34,884.70, 48,139.88 and 19,778.76 is: 27,294.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,884.70 : 48,139.88 = 19,778.76 : x
  2. Step 2: Convert to fraction form
    34,884.70/48,139.88 = 19,778.76/x
  3. Step 3: Cross multiply
    34,884.70x = 48,139.88 × 19,778.76
  4. Step 4: Simplify right side
    34,884.70x = 952,147,034.06
  5. Step 5: Solve for x
    x = 952,147,034.06/34,884.70
  6. Step 6: Final answer
    x = 27,294.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.