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Finding the Fourth Proportional to 66,381.66, 91,603.44 and 36,166.77

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Solution

The fourth proportional to 66,381.66, 91,603.44 and 36,166.77 is: 49,908.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,381.66 : 91,603.44 = 36,166.77 : x
  2. Step 2: Convert to fraction form
    66,381.66/91,603.44 = 36,166.77/x
  3. Step 3: Cross multiply
    66,381.66x = 91,603.44 × 36,166.77
  4. Step 4: Simplify right side
    66,381.66x = 3,313,000,545.69
  5. Step 5: Solve for x
    x = 3,313,000,545.69/66,381.66
  6. Step 6: Final answer
    x = 49,908.37

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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.