Home / 77,147.49-115,608.02-43,479.06

Finding the Fourth Proportional to 77,147.49, 115,608.02 and 43,479.06

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Solution

The fourth proportional to 77,147.49, 115,608.02 and 43,479.06 is: 65,154.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,147.49 : 115,608.02 = 43,479.06 : x
  2. Step 2: Convert to fraction form
    77,147.49/115,608.02 = 43,479.06/x
  3. Step 3: Cross multiply
    77,147.49x = 115,608.02 × 43,479.06
  4. Step 4: Simplify right side
    77,147.49x = 5,026,527,619.38
  5. Step 5: Solve for x
    x = 5,026,527,619.38/77,147.49
  6. Step 6: Final answer
    x = 65,154.78

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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.