Home / 81,916.59-122,904.46-28,616.44

Finding the Fourth Proportional to 81,916.59, 122,904.46 and 28,616.44

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Solution

The fourth proportional to 81,916.59, 122,904.46 and 28,616.44 is: 42,934.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,916.59 : 122,904.46 = 28,616.44 : x
  2. Step 2: Convert to fraction form
    81,916.59/122,904.46 = 28,616.44/x
  3. Step 3: Cross multiply
    81,916.59x = 122,904.46 × 28,616.44
  4. Step 4: Simplify right side
    81,916.59x = 3,517,088,144.76
  5. Step 5: Solve for x
    x = 3,517,088,144.76/81,916.59
  6. Step 6: Final answer
    x = 42,934.99

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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.