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Finding the Fourth Proportional to 66,433.61, 91,677.84 and 36,218.39

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Solution

The fourth proportional to 66,433.61, 91,677.84 and 36,218.39 is: 49,981.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,433.61 : 91,677.84 = 36,218.39 : x
  2. Step 2: Convert to fraction form
    66,433.61/91,677.84 = 36,218.39/x
  3. Step 3: Cross multiply
    66,433.61x = 91,677.84 × 36,218.39
  4. Step 4: Simplify right side
    66,433.61x = 3,320,423,169.27
  5. Step 5: Solve for x
    x = 3,320,423,169.27/66,433.61
  6. Step 6: Final answer
    x = 49,981.07

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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.