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Finding the Fourth Proportional to 66,666, 92,010.24 and 38,366.40

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Solution

The fourth proportional to 66,666, 92,010.24 and 38,366.40 is: 52,952.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,666 : 92,010.24 = 38,366.40 : x
  2. Step 2: Convert to fraction form
    66,666/92,010.24 = 38,366.40/x
  3. Step 3: Cross multiply
    66,666x = 92,010.24 × 38,366.40
  4. Step 4: Simplify right side
    66,666x = 3,530,101,671.94
  5. Step 5: Solve for x
    x = 3,530,101,671.94/66,666
  6. Step 6: Final answer
    x = 52,952.05

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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.