Home / 77,073.66-115,531.70-43,723.28

Finding the Fourth Proportional to 77,073.66, 115,531.70 and 43,723.28

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Solution

The fourth proportional to 77,073.66, 115,531.70 and 43,723.28 is: 65,540.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,073.66 : 115,531.70 = 43,723.28 : x
  2. Step 2: Convert to fraction form
    77,073.66/115,531.70 = 43,723.28/x
  3. Step 3: Cross multiply
    77,073.66x = 115,531.70 × 43,723.28
  4. Step 4: Simplify right side
    77,073.66x = 5,051,424,071.70
  5. Step 5: Solve for x
    x = 5,051,424,071.70/77,073.66
  6. Step 6: Final answer
    x = 65,540.21

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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.