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Finding the Fourth Proportional to 61,775.04, 85,245.12 and 34,918.72

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Solution

The fourth proportional to 61,775.04, 85,245.12 and 34,918.72 is: 48,185.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,775.04 : 85,245.12 = 34,918.72 : x
  2. Step 2: Convert to fraction form
    61,775.04/85,245.12 = 34,918.72/x
  3. Step 3: Cross multiply
    61,775.04x = 85,245.12 × 34,918.72
  4. Step 4: Simplify right side
    61,775.04x = 2,976,650,476.65
  5. Step 5: Solve for x
    x = 2,976,650,476.65/61,775.04
  6. Step 6: Final answer
    x = 48,185.33

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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.