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Finding the Fourth Proportional to 66,395.42, 91,623.35 and 36,180.13

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Solution

The fourth proportional to 66,395.42, 91,623.35 and 36,180.13 is: 49,927.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,395.42 : 91,623.35 = 36,180.13 : x
  2. Step 2: Convert to fraction form
    66,395.42/91,623.35 = 36,180.13/x
  3. Step 3: Cross multiply
    66,395.42x = 91,623.35 × 36,180.13
  4. Step 4: Simplify right side
    66,395.42x = 3,314,944,714.04
  5. Step 5: Solve for x
    x = 3,314,944,714.04/66,395.42
  6. Step 6: Final answer
    x = 49,927.31

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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.