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Finding the Fourth Proportional to 74,710.59, 103,099.26 and 40,719.39

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Solution

The fourth proportional to 74,710.59, 103,099.26 and 40,719.39 is: 56,192.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,710.59 : 103,099.26 = 40,719.39 : x
  2. Step 2: Convert to fraction form
    74,710.59/103,099.26 = 40,719.39/x
  3. Step 3: Cross multiply
    74,710.59x = 103,099.26 × 40,719.39
  4. Step 4: Simplify right side
    74,710.59x = 4,198,138,976.65
  5. Step 5: Solve for x
    x = 4,198,138,976.65/74,710.59
  6. Step 6: Final answer
    x = 56,192.02

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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.