Home / 112,865.43-155,756.05-61,882.82

Finding the Fourth Proportional to 112,865.43, 155,756.05 and 61,882.82

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Solution

The fourth proportional to 112,865.43, 155,756.05 and 61,882.82 is: 85,399.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,865.43 : 155,756.05 = 61,882.82 : x
  2. Step 2: Convert to fraction form
    112,865.43/155,756.05 = 61,882.82/x
  3. Step 3: Cross multiply
    112,865.43x = 155,756.05 × 61,882.82
  4. Step 4: Simplify right side
    112,865.43x = 9,638,622,517.87
  5. Step 5: Solve for x
    x = 9,638,622,517.87/112,865.43
  6. Step 6: Final answer
    x = 85,399.25

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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.