Home / 61,154.20-91,731.30-53,378.20

Finding the Fourth Proportional to 61,154.20, 91,731.30 and 53,378.20

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Solution

The fourth proportional to 61,154.20, 91,731.30 and 53,378.20 is: 80,067.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,154.20 : 91,731.30 = 53,378.20 : x
  2. Step 2: Convert to fraction form
    61,154.20/91,731.30 = 53,378.20/x
  3. Step 3: Cross multiply
    61,154.20x = 91,731.30 × 53,378.20
  4. Step 4: Simplify right side
    61,154.20x = 4,896,451,677.66
  5. Step 5: Solve for x
    x = 4,896,451,677.66/61,154.20
  6. Step 6: Final answer
    x = 80,067.30

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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.