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Finding the Fourth Proportional to 66,894.95, 100,329.63 and 33,605.78

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Solution

The fourth proportional to 66,894.95, 100,329.63 and 33,605.78 is: 50,402.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,894.95 : 100,329.63 = 33,605.78 : x
  2. Step 2: Convert to fraction form
    66,894.95/100,329.63 = 33,605.78/x
  3. Step 3: Cross multiply
    66,894.95x = 100,329.63 × 33,605.78
  4. Step 4: Simplify right side
    66,894.95x = 3,371,654,971.61
  5. Step 5: Solve for x
    x = 3,371,654,971.61/66,894.95
  6. Step 6: Final answer
    x = 50,402.24

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1.5x scale

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.