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Finding the Fourth Proportional to 66,870.62, 100,111.49 and 52,034.57

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Solution

The fourth proportional to 66,870.62, 100,111.49 and 52,034.57 is: 77,900.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,870.62 : 100,111.49 = 52,034.57 : x
  2. Step 2: Convert to fraction form
    66,870.62/100,111.49 = 52,034.57/x
  3. Step 3: Cross multiply
    66,870.62x = 100,111.49 × 52,034.57
  4. Step 4: Simplify right side
    66,870.62x = 5,209,257,573.48
  5. Step 5: Solve for x
    x = 5,209,257,573.48/66,870.62
  6. Step 6: Final answer
    x = 77,900.55

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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.