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Finding the Fourth Proportional to 71,661.44, 98,898.90 and 39,829.52

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Solution

The fourth proportional to 71,661.44, 98,898.90 and 39,829.52 is: 54,968.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,661.44 : 98,898.90 = 39,829.52 : x
  2. Step 2: Convert to fraction form
    71,661.44/98,898.90 = 39,829.52/x
  3. Step 3: Cross multiply
    71,661.44x = 98,898.90 × 39,829.52
  4. Step 4: Simplify right side
    71,661.44x = 3,939,095,715.53
  5. Step 5: Solve for x
    x = 3,939,095,715.53/71,661.44
  6. Step 6: Final answer
    x = 54,968.14

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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.