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Finding the Fourth Proportional to 70,518.52, 105,748.62 and 29,974.78

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Solution

The fourth proportional to 70,518.52, 105,748.62 and 29,974.78 is: 44,949.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,518.52 : 105,748.62 = 29,974.78 : x
  2. Step 2: Convert to fraction form
    70,518.52/105,748.62 = 29,974.78/x
  3. Step 3: Cross multiply
    70,518.52x = 105,748.62 × 29,974.78
  4. Step 4: Simplify right side
    70,518.52x = 3,169,791,619.80
  5. Step 5: Solve for x
    x = 3,169,791,619.80/70,518.52
  6. Step 6: Final answer
    x = 44,949.78

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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.