Home / 61,615.12-91,976.84-54,141.68

Finding the Fourth Proportional to 61,615.12, 91,976.84 and 54,141.68

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Solution

The fourth proportional to 61,615.12, 91,976.84 and 54,141.68 is: 80,820.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,615.12 : 91,976.84 = 54,141.68 : x
  2. Step 2: Convert to fraction form
    61,615.12/91,976.84 = 54,141.68/x
  3. Step 3: Cross multiply
    61,615.12x = 91,976.84 × 54,141.68
  4. Step 4: Simplify right side
    61,615.12x = 4,979,780,638.69
  5. Step 5: Solve for x
    x = 4,979,780,638.69/61,615.12
  6. Step 6: Final answer
    x = 80,820.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.