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Finding the Fourth Proportional to 74,731.17, 111,601.41 and 65,676.99

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Solution

The fourth proportional to 74,731.17, 111,601.41 and 65,676.99 is: 98,080.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,731.17 : 111,601.41 = 65,676.99 : x
  2. Step 2: Convert to fraction form
    74,731.17/111,601.41 = 65,676.99/x
  3. Step 3: Cross multiply
    74,731.17x = 111,601.41 × 65,676.99
  4. Step 4: Simplify right side
    74,731.17x = 7,329,644,688.56
  5. Step 5: Solve for x
    x = 7,329,644,688.56/74,731.17
  6. Step 6: Final answer
    x = 98,080.15

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.