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Finding the Fourth Proportional to 66,062.34, 91,160 and 39,200.22

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Solution

The fourth proportional to 66,062.34, 91,160 and 39,200.22 is: 54,092.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,062.34 : 91,160 = 39,200.22 : x
  2. Step 2: Convert to fraction form
    66,062.34/91,160 = 39,200.22/x
  3. Step 3: Cross multiply
    66,062.34x = 91,160 × 39,200.22
  4. Step 4: Simplify right side
    66,062.34x = 3,573,492,055.20
  5. Step 5: Solve for x
    x = 3,573,492,055.20/66,062.34
  6. Step 6: Final answer
    x = 54,092.73

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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.