Home / 81,916.46-122,904.27-28,616.31

Finding the Fourth Proportional to 81,916.46, 122,904.27 and 28,616.31

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Solution

The fourth proportional to 81,916.46, 122,904.27 and 28,616.31 is: 42,934.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,916.46 : 122,904.27 = 28,616.31 : x
  2. Step 2: Convert to fraction form
    81,916.46/122,904.27 = 28,616.31/x
  3. Step 3: Cross multiply
    81,916.46x = 122,904.27 × 28,616.31
  4. Step 4: Simplify right side
    81,916.46x = 3,517,066,690.64
  5. Step 5: Solve for x
    x = 3,517,066,690.64/81,916.46
  6. Step 6: Final answer
    x = 42,934.80

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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.