Home / 74,977.12-103,479.78-43,143.88

Finding the Fourth Proportional to 74,977.12, 103,479.78 and 43,143.88

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Solution

The fourth proportional to 74,977.12, 103,479.78 and 43,143.88 is: 59,545.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,977.12 : 103,479.78 = 43,143.88 : x
  2. Step 2: Convert to fraction form
    74,977.12/103,479.78 = 43,143.88/x
  3. Step 3: Cross multiply
    74,977.12x = 103,479.78 × 43,143.88
  4. Step 4: Simplify right side
    74,977.12x = 4,464,519,210.75
  5. Step 5: Solve for x
    x = 4,464,519,210.75/74,977.12
  6. Step 6: Final answer
    x = 59,545.09

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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.