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Finding the Fourth Proportional to 61,974, 85,503.91 and 36,126.65

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Solution

The fourth proportional to 61,974, 85,503.91 and 36,126.65 is: 49,843.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,974 : 85,503.91 = 36,126.65 : x
  2. Step 2: Convert to fraction form
    61,974/85,503.91 = 36,126.65/x
  3. Step 3: Cross multiply
    61,974x = 85,503.91 × 36,126.65
  4. Step 4: Simplify right side
    61,974x = 3,088,969,830.20
  5. Step 5: Solve for x
    x = 3,088,969,830.20/61,974
  6. Step 6: Final answer
    x = 49,843.00

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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.