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Finding the Fourth Proportional to 74,762.92, 112,141.92 and 30,376.52

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Solution

The fourth proportional to 74,762.92, 112,141.92 and 30,376.52 is: 45,563.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,762.92 : 112,141.92 = 30,376.52 : x
  2. Step 2: Convert to fraction form
    74,762.92/112,141.92 = 30,376.52/x
  3. Step 3: Cross multiply
    74,762.92x = 112,141.92 × 30,376.52
  4. Step 4: Simplify right side
    74,762.92x = 3,406,481,275.72
  5. Step 5: Solve for x
    x = 3,406,481,275.72/74,762.92
  6. Step 6: Final answer
    x = 45,563.78

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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.