Home / 71,531.12-98,731.12-48,879.28

Finding the Fourth Proportional to 71,531.12, 98,731.12 and 48,879.28

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Solution

The fourth proportional to 71,531.12, 98,731.12 and 48,879.28 is: 67,465.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,531.12 : 98,731.12 = 48,879.28 : x
  2. Step 2: Convert to fraction form
    71,531.12/98,731.12 = 48,879.28/x
  3. Step 3: Cross multiply
    71,531.12x = 98,731.12 × 48,879.28
  4. Step 4: Simplify right side
    71,531.12x = 4,825,906,059.19
  5. Step 5: Solve for x
    x = 4,825,906,059.19/71,531.12
  6. Step 6: Final answer
    x = 67,465.83

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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.