Home / 78,960.56-108,962.34-43,151.78

Finding the Fourth Proportional to 78,960.56, 108,962.34 and 43,151.78

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Solution

The fourth proportional to 78,960.56, 108,962.34 and 43,151.78 is: 59,547.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,960.56 : 108,962.34 = 43,151.78 : x
  2. Step 2: Convert to fraction form
    78,960.56/108,962.34 = 43,151.78/x
  3. Step 3: Cross multiply
    78,960.56x = 108,962.34 × 43,151.78
  4. Step 4: Simplify right side
    78,960.56x = 4,701,918,923.97
  5. Step 5: Solve for x
    x = 4,701,918,923.97/78,960.56
  6. Step 6: Final answer
    x = 59,547.69

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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.