Home / 78,943.04-108,948.96-43,138.48

Finding the Fourth Proportional to 78,943.04, 108,948.96 and 43,138.48

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Solution

The fourth proportional to 78,943.04, 108,948.96 and 43,138.48 is: 59,535.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,943.04 : 108,948.96 = 43,138.48 : x
  2. Step 2: Convert to fraction form
    78,943.04/108,948.96 = 43,138.48/x
  3. Step 3: Cross multiply
    78,943.04x = 108,948.96 × 43,138.48
  4. Step 4: Simplify right side
    78,943.04x = 4,699,892,531.98
  5. Step 5: Solve for x
    x = 4,699,892,531.98/78,943.04
  6. Step 6: Final answer
    x = 59,535.24

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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.