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Finding the Fourth Proportional to 61,784.80, 85,268.40 and 51,695.44

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Solution

The fourth proportional to 61,784.80, 85,268.40 and 51,695.44 is: 71,344.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,784.80 : 85,268.40 = 51,695.44 : x
  2. Step 2: Convert to fraction form
    61,784.80/85,268.40 = 51,695.44/x
  3. Step 3: Cross multiply
    61,784.80x = 85,268.40 × 51,695.44
  4. Step 4: Simplify right side
    61,784.80x = 4,407,987,456.10
  5. Step 5: Solve for x
    x = 4,407,987,456.10/61,784.80
  6. Step 6: Final answer
    x = 71,344.21

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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.