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Finding the Fourth Proportional to 74,819.75, 103,260.84 and 42,994.85

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Solution

The fourth proportional to 74,819.75, 103,260.84 and 42,994.85 is: 59,338.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,819.75 : 103,260.84 = 42,994.85 : x
  2. Step 2: Convert to fraction form
    74,819.75/103,260.84 = 42,994.85/x
  3. Step 3: Cross multiply
    74,819.75x = 103,260.84 × 42,994.85
  4. Step 4: Simplify right side
    74,819.75x = 4,439,684,326.67
  5. Step 5: Solve for x
    x = 4,439,684,326.67/74,819.75
  6. Step 6: Final answer
    x = 59,338.40

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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.