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Finding the Fourth Proportional to 66,379.74, 91,603.20 and 36,166.32

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Solution

The fourth proportional to 66,379.74, 91,603.20 and 36,166.32 is: 49,909.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,379.74 : 91,603.20 = 36,166.32 : x
  2. Step 2: Convert to fraction form
    66,379.74/91,603.20 = 36,166.32/x
  3. Step 3: Cross multiply
    66,379.74x = 91,603.20 × 36,166.32
  4. Step 4: Simplify right side
    66,379.74x = 3,312,950,644.22
  5. Step 5: Solve for x
    x = 3,312,950,644.22/66,379.74
  6. Step 6: Final answer
    x = 49,909.06

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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.