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Finding the Fourth Proportional to 74,648.80, 111,973.20 and 30,252.70

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Solution

The fourth proportional to 74,648.80, 111,973.20 and 30,252.70 is: 45,379.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,648.80 : 111,973.20 = 30,252.70 : x
  2. Step 2: Convert to fraction form
    74,648.80/111,973.20 = 30,252.70/x
  3. Step 3: Cross multiply
    74,648.80x = 111,973.20 × 30,252.70
  4. Step 4: Simplify right side
    74,648.80x = 3,387,491,627.64
  5. Step 5: Solve for x
    x = 3,387,491,627.64/74,648.80
  6. Step 6: Final answer
    x = 45,379.05

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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.