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Finding the Fourth Proportional to 66,810.54, 100,184.52 and 38,738.58

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Solution

The fourth proportional to 66,810.54, 100,184.52 and 38,738.58 is: 58,089.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,810.54 : 100,184.52 = 38,738.58 : x
  2. Step 2: Convert to fraction form
    66,810.54/100,184.52 = 38,738.58/x
  3. Step 3: Cross multiply
    66,810.54x = 100,184.52 × 38,738.58
  4. Step 4: Simplify right side
    66,810.54x = 3,881,006,042.78
  5. Step 5: Solve for x
    x = 3,881,006,042.78/66,810.54
  6. Step 6: Final answer
    x = 58,089.73

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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.