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Finding the Fourth Proportional to 66,202.79, 91,360.16 and 35,988.09

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Solution

The fourth proportional to 66,202.79, 91,360.16 and 35,988.09 is: 49,663.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,202.79 : 91,360.16 = 35,988.09 : x
  2. Step 2: Convert to fraction form
    66,202.79/91,360.16 = 35,988.09/x
  3. Step 3: Cross multiply
    66,202.79x = 91,360.16 × 35,988.09
  4. Step 4: Simplify right side
    66,202.79x = 3,287,877,480.55
  5. Step 5: Solve for x
    x = 3,287,877,480.55/66,202.79
  6. Step 6: Final answer
    x = 49,663.73

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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.