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Finding the Fourth Proportional to 71,537.77, 98,718.60 and 39,271.60

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Solution

The fourth proportional to 71,537.77, 98,718.60 and 39,271.60 is: 54,192.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,537.77 : 98,718.60 = 39,271.60 : x
  2. Step 2: Convert to fraction form
    71,537.77/98,718.60 = 39,271.60/x
  3. Step 3: Cross multiply
    71,537.77x = 98,718.60 × 39,271.60
  4. Step 4: Simplify right side
    71,537.77x = 3,876,837,371.76
  5. Step 5: Solve for x
    x = 3,876,837,371.76/71,537.77
  6. Step 6: Final answer
    x = 54,192.87

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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.