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Finding the Fourth Proportional to 61,148.72, 84,422.04 and 39,963.44

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Solution

The fourth proportional to 61,148.72, 84,422.04 and 39,963.44 is: 55,173.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,148.72 : 84,422.04 = 39,963.44 : x
  2. Step 2: Convert to fraction form
    61,148.72/84,422.04 = 39,963.44/x
  3. Step 3: Cross multiply
    61,148.72x = 84,422.04 × 39,963.44
  4. Step 4: Simplify right side
    61,148.72x = 3,373,795,130.22
  5. Step 5: Solve for x
    x = 3,373,795,130.22/61,148.72
  6. Step 6: Final answer
    x = 55,173.60

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1.5x scale

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.