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Finding the Fourth Proportional to 68,008.74, 101,820.63 and 51,979.91

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Solution

The fourth proportional to 68,008.74, 101,820.63 and 51,979.91 is: 77,822.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,008.74 : 101,820.63 = 51,979.91 : x
  2. Step 2: Convert to fraction form
    68,008.74/101,820.63 = 51,979.91/x
  3. Step 3: Cross multiply
    68,008.74x = 101,820.63 × 51,979.91
  4. Step 4: Simplify right side
    68,008.74x = 5,292,626,674.44
  5. Step 5: Solve for x
    x = 5,292,626,674.44/68,008.74
  6. Step 6: Final answer
    x = 77,822.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.