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Finding the Fourth Proportional to 71,663.54, 98,996.84 and 57,417.98

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Solution

The fourth proportional to 71,663.54, 98,996.84 and 57,417.98 is: 79,317.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,663.54 : 98,996.84 = 57,417.98 : x
  2. Step 2: Convert to fraction form
    71,663.54/98,996.84 = 57,417.98/x
  3. Step 3: Cross multiply
    71,663.54x = 98,996.84 × 57,417.98
  4. Step 4: Simplify right side
    71,663.54x = 5,684,198,579.18
  5. Step 5: Solve for x
    x = 5,684,198,579.18/71,663.54
  6. Step 6: Final answer
    x = 79,317.86

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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.