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Finding the Fourth Proportional to 71,485.53, 98,650.47 and 39,656.44

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Solution

The fourth proportional to 71,485.53, 98,650.47 and 39,656.44 is: 54,726.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,485.53 : 98,650.47 = 39,656.44 : x
  2. Step 2: Convert to fraction form
    71,485.53/98,650.47 = 39,656.44/x
  3. Step 3: Cross multiply
    71,485.53x = 98,650.47 × 39,656.44
  4. Step 4: Simplify right side
    71,485.53x = 3,912,126,444.53
  5. Step 5: Solve for x
    x = 3,912,126,444.53/71,485.53
  6. Step 6: Final answer
    x = 54,726.13

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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.