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Finding the Fourth Proportional to 61,900.86, 85,422.51 and 35,042.88

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Solution

The fourth proportional to 61,900.86, 85,422.51 and 35,042.88 is: 48,358.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,900.86 : 85,422.51 = 35,042.88 : x
  2. Step 2: Convert to fraction form
    61,900.86/85,422.51 = 35,042.88/x
  3. Step 3: Cross multiply
    61,900.86x = 85,422.51 × 35,042.88
  4. Step 4: Simplify right side
    61,900.86x = 2,993,450,767.23
  5. Step 5: Solve for x
    x = 2,993,450,767.23/61,900.86
  6. Step 6: Final answer
    x = 48,358.79

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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.