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Finding the Fourth Proportional to 70,445.90, 105,493.55 and 49,286.95

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Solution

The fourth proportional to 70,445.90, 105,493.55 and 49,286.95 is: 73,807.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,445.90 : 105,493.55 = 49,286.95 : x
  2. Step 2: Convert to fraction form
    70,445.90/105,493.55 = 49,286.95/x
  3. Step 3: Cross multiply
    70,445.90x = 105,493.55 × 49,286.95
  4. Step 4: Simplify right side
    70,445.90x = 5,199,455,324.17
  5. Step 5: Solve for x
    x = 5,199,455,324.17/70,445.90
  6. Step 6: Final answer
    x = 73,807.78

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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.