Home / 81,498.36-122,217.59-28,176.66

Finding the Fourth Proportional to 81,498.36, 122,217.59 and 28,176.66

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Solution

The fourth proportional to 81,498.36, 122,217.59 and 28,176.66 is: 42,254.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,498.36 : 122,217.59 = 28,176.66 : x
  2. Step 2: Convert to fraction form
    81,498.36/122,217.59 = 28,176.66/x
  3. Step 3: Cross multiply
    81,498.36x = 122,217.59 × 28,176.66
  4. Step 4: Simplify right side
    81,498.36x = 3,443,683,479.45
  5. Step 5: Solve for x
    x = 3,443,683,479.45/81,498.36
  6. Step 6: Final answer
    x = 42,254.64

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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.