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Finding the Fourth Proportional to 71,548.88, 98,737.06 and 39,284.08

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Solution

The fourth proportional to 71,548.88, 98,737.06 and 39,284.08 is: 54,211.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,548.88 : 98,737.06 = 39,284.08 : x
  2. Step 2: Convert to fraction form
    71,548.88/98,737.06 = 39,284.08/x
  3. Step 3: Cross multiply
    71,548.88x = 98,737.06 × 39,284.08
  4. Step 4: Simplify right side
    71,548.88x = 3,878,794,564.00
  5. Step 5: Solve for x
    x = 3,878,794,564.00/71,548.88
  6. Step 6: Final answer
    x = 54,211.81

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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.