Home / 76,943.31-115,320.79-43,691.19

Finding the Fourth Proportional to 76,943.31, 115,320.79 and 43,691.19

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Solution

The fourth proportional to 76,943.31, 115,320.79 and 43,691.19 is: 65,483.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,943.31 : 115,320.79 = 43,691.19 : x
  2. Step 2: Convert to fraction form
    76,943.31/115,320.79 = 43,691.19/x
  3. Step 3: Cross multiply
    76,943.31x = 115,320.79 × 43,691.19
  4. Step 4: Simplify right side
    76,943.31x = 5,038,502,546.84
  5. Step 5: Solve for x
    x = 5,038,502,546.84/76,943.31
  6. Step 6: Final answer
    x = 65,483.31

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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.