Home / 74,943.10-112,371.45-28,200.70

Finding the Fourth Proportional to 74,943.10, 112,371.45 and 28,200.70

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Solution

The fourth proportional to 74,943.10, 112,371.45 and 28,200.70 is: 42,284.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,943.10 : 112,371.45 = 28,200.70 : x
  2. Step 2: Convert to fraction form
    74,943.10/112,371.45 = 28,200.70/x
  3. Step 3: Cross multiply
    74,943.10x = 112,371.45 × 28,200.70
  4. Step 4: Simplify right side
    74,943.10x = 3,168,953,550.02
  5. Step 5: Solve for x
    x = 3,168,953,550.02/74,943.10
  6. Step 6: Final answer
    x = 42,284.79

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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.