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Finding the Fourth Proportional to 34,140.70, 51,211.05 and 28,308.70

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Solution

The fourth proportional to 34,140.70, 51,211.05 and 28,308.70 is: 42,463.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,140.70 : 51,211.05 = 28,308.70 : x
  2. Step 2: Convert to fraction form
    34,140.70/51,211.05 = 28,308.70/x
  3. Step 3: Cross multiply
    34,140.70x = 51,211.05 × 28,308.70
  4. Step 4: Simplify right side
    34,140.70x = 1,449,718,251.14
  5. Step 5: Solve for x
    x = 1,449,718,251.14/34,140.70
  6. Step 6: Final answer
    x = 42,463.05

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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.