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Finding the Fourth Proportional to 66,963.12, 92,310.42 and 51,019.92

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Solution

The fourth proportional to 66,963.12, 92,310.42 and 51,019.92 is: 70,332.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,963.12 : 92,310.42 = 51,019.92 : x
  2. Step 2: Convert to fraction form
    66,963.12/92,310.42 = 51,019.92/x
  3. Step 3: Cross multiply
    66,963.12x = 92,310.42 × 51,019.92
  4. Step 4: Simplify right side
    66,963.12x = 4,709,670,243.57
  5. Step 5: Solve for x
    x = 4,709,670,243.57/66,963.12
  6. Step 6: Final answer
    x = 70,332.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.