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Finding the Fourth Proportional to 49,843.70, 74,765.55 and 45,350.90

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Solution

The fourth proportional to 49,843.70, 74,765.55 and 45,350.90 is: 68,026.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,843.70 : 74,765.55 = 45,350.90 : x
  2. Step 2: Convert to fraction form
    49,843.70/74,765.55 = 45,350.90/x
  3. Step 3: Cross multiply
    49,843.70x = 74,765.55 × 45,350.90
  4. Step 4: Simplify right side
    49,843.70x = 3,390,684,981.50
  5. Step 5: Solve for x
    x = 3,390,684,981.50/49,843.70
  6. Step 6: Final answer
    x = 68,026.35

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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.