Home / 105,708.76-145,876.92-57,962

Finding the Fourth Proportional to 105,708.76, 145,876.92 and 57,962

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Solution

The fourth proportional to 105,708.76, 145,876.92 and 57,962 is: 79,986.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,708.76 : 145,876.92 = 57,962 : x
  2. Step 2: Convert to fraction form
    105,708.76/145,876.92 = 57,962/x
  3. Step 3: Cross multiply
    105,708.76x = 145,876.92 × 57,962
  4. Step 4: Simplify right side
    105,708.76x = 8,455,318,037.04
  5. Step 5: Solve for x
    x = 8,455,318,037.04/105,708.76
  6. Step 6: Final answer
    x = 79,986.92

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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.