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Finding the Fourth Proportional to 34,147.60, 51,221.40 and 30,648.40

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Solution

The fourth proportional to 34,147.60, 51,221.40 and 30,648.40 is: 45,972.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,147.60 : 51,221.40 = 30,648.40 : x
  2. Step 2: Convert to fraction form
    34,147.60/51,221.40 = 30,648.40/x
  3. Step 3: Cross multiply
    34,147.60x = 51,221.40 × 30,648.40
  4. Step 4: Simplify right side
    34,147.60x = 1,569,853,955.76
  5. Step 5: Solve for x
    x = 1,569,853,955.76/34,147.60
  6. Step 6: Final answer
    x = 45,972.60

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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.