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Finding the Fourth Proportional to 71,850.64, 99,127.08 and 71,739.88

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Solution

The fourth proportional to 71,850.64, 99,127.08 and 71,739.88 is: 98,974.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,850.64 : 99,127.08 = 71,739.88 : x
  2. Step 2: Convert to fraction form
    71,850.64/99,127.08 = 71,739.88/x
  3. Step 3: Cross multiply
    71,850.64x = 99,127.08 × 71,739.88
  4. Step 4: Simplify right side
    71,850.64x = 7,111,364,823.95
  5. Step 5: Solve for x
    x = 7,111,364,823.95/71,850.64
  6. Step 6: Final answer
    x = 98,974.27

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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.