Home / 74,976.12-103,478.40-43,142.88

Finding the Fourth Proportional to 74,976.12, 103,478.40 and 43,142.88

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Solution

The fourth proportional to 74,976.12, 103,478.40 and 43,142.88 is: 59,543.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,976.12 : 103,478.40 = 43,142.88 : x
  2. Step 2: Convert to fraction form
    74,976.12/103,478.40 = 43,142.88/x
  3. Step 3: Cross multiply
    74,976.12x = 103,478.40 × 43,142.88
  4. Step 4: Simplify right side
    74,976.12x = 4,464,356,193.79
  5. Step 5: Solve for x
    x = 4,464,356,193.79/74,976.12
  6. Step 6: Final answer
    x = 59,543.71

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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.