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Finding the Fourth Proportional to 81,696.79, 122,650.12 and 62,988.71

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Solution

The fourth proportional to 81,696.79, 122,650.12 and 62,988.71 is: 94,563.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,696.79 : 122,650.12 = 62,988.71 : x
  2. Step 2: Convert to fraction form
    81,696.79/122,650.12 = 62,988.71/x
  3. Step 3: Cross multiply
    81,696.79x = 122,650.12 × 62,988.71
  4. Step 4: Simplify right side
    81,696.79x = 7,725,572,226.89
  5. Step 5: Solve for x
    x = 7,725,572,226.89/81,696.79
  6. Step 6: Final answer
    x = 94,563.97

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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.