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Finding the Fourth Proportional to 66,159.72, 91,299.31 and 35,945.51

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Solution

The fourth proportional to 66,159.72, 91,299.31 and 35,945.51 is: 49,604.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,159.72 : 91,299.31 = 35,945.51 : x
  2. Step 2: Convert to fraction form
    66,159.72/91,299.31 = 35,945.51/x
  3. Step 3: Cross multiply
    66,159.72x = 91,299.31 × 35,945.51
  4. Step 4: Simplify right side
    66,159.72x = 3,281,799,714.24
  5. Step 5: Solve for x
    x = 3,281,799,714.24/66,159.72
  6. Step 6: Final answer
    x = 49,604.20

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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.