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Finding the Fourth Proportional to 71,588.49, 98,865.60 and 53,655.09

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Solution

The fourth proportional to 71,588.49, 98,865.60 and 53,655.09 is: 74,099.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,588.49 : 98,865.60 = 53,655.09 : x
  2. Step 2: Convert to fraction form
    71,588.49/98,865.60 = 53,655.09/x
  3. Step 3: Cross multiply
    71,588.49x = 98,865.60 × 53,655.09
  4. Step 4: Simplify right side
    71,588.49x = 5,304,642,171.58
  5. Step 5: Solve for x
    x = 5,304,642,171.58/71,588.49
  6. Step 6: Final answer
    x = 74,099.10

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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.