Home / 75,150.48-103,907.05-65,691.91

Finding the Fourth Proportional to 75,150.48, 103,907.05 and 65,691.91

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Solution

The fourth proportional to 75,150.48, 103,907.05 and 65,691.91 is: 90,829.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,150.48 : 103,907.05 = 65,691.91 : x
  2. Step 2: Convert to fraction form
    75,150.48/103,907.05 = 65,691.91/x
  3. Step 3: Cross multiply
    75,150.48x = 103,907.05 × 65,691.91
  4. Step 4: Simplify right side
    75,150.48x = 6,825,852,912.14
  5. Step 5: Solve for x
    x = 6,825,852,912.14/75,150.48
  6. Step 6: Final answer
    x = 90,829.13

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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.