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Finding the Fourth Proportional to 77,080.66, 115,432.29 and 63,671.62

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Solution

The fourth proportional to 77,080.66, 115,432.29 and 63,671.62 is: 95,351.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,080.66 : 115,432.29 = 63,671.62 : x
  2. Step 2: Convert to fraction form
    77,080.66/115,432.29 = 63,671.62/x
  3. Step 3: Cross multiply
    77,080.66x = 115,432.29 × 63,671.62
  4. Step 4: Simplify right side
    77,080.66x = 7,349,760,832.46
  5. Step 5: Solve for x
    x = 7,349,760,832.46/77,080.66
  6. Step 6: Final answer
    x = 95,351.55

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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.