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Finding the Fourth Proportional to 82,881.80, 124,323.57 and 66,346.94

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Solution

The fourth proportional to 82,881.80, 124,323.57 and 66,346.94 is: 99,521.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,881.80 : 124,323.57 = 66,346.94 : x
  2. Step 2: Convert to fraction form
    82,881.80/124,323.57 = 66,346.94/x
  3. Step 3: Cross multiply
    82,881.80x = 124,323.57 × 66,346.94
  4. Step 4: Simplify right side
    82,881.80x = 8,248,489,359.36
  5. Step 5: Solve for x
    x = 8,248,489,359.36/82,881.80
  6. Step 6: Final answer
    x = 99,521.11

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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.