Home / 81,352.07-122,045.21-28,049.00

Finding the Fourth Proportional to 81,352.07, 122,045.21 and 28,049.00

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Solution

The fourth proportional to 81,352.07, 122,045.21 and 28,049.00 is: 42,079.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,352.07 : 122,045.21 = 28,049.00 : x
  2. Step 2: Convert to fraction form
    81,352.07/122,045.21 = 28,049.00/x
  3. Step 3: Cross multiply
    81,352.07x = 122,045.21 × 28,049.00
  4. Step 4: Simplify right side
    81,352.07x = 3,423,245,344.82
  5. Step 5: Solve for x
    x = 3,423,245,344.82/81,352.07
  6. Step 6: Final answer
    x = 42,079.39

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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.