Home / 98,079.85-135,346.10-55,646.38

Finding the Fourth Proportional to 98,079.85, 135,346.10 and 55,646.38

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Solution

The fourth proportional to 98,079.85, 135,346.10 and 55,646.38 is: 76,789.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,079.85 : 135,346.10 = 55,646.38 : x
  2. Step 2: Convert to fraction form
    98,079.85/135,346.10 = 55,646.38/x
  3. Step 3: Cross multiply
    98,079.85x = 135,346.10 × 55,646.38
  4. Step 4: Simplify right side
    98,079.85x = 7,531,520,512.12
  5. Step 5: Solve for x
    x = 7,531,520,512.12/98,079.85
  6. Step 6: Final answer
    x = 76,789.68

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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.