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Finding the Fourth Proportional to 73,748.94, 110,624.01 and 21,160.08

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Solution

The fourth proportional to 73,748.94, 110,624.01 and 21,160.08 is: 31,740.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,748.94 : 110,624.01 = 21,160.08 : x
  2. Step 2: Convert to fraction form
    73,748.94/110,624.01 = 21,160.08/x
  3. Step 3: Cross multiply
    73,748.94x = 110,624.01 × 21,160.08
  4. Step 4: Simplify right side
    73,748.94x = 2,340,812,901.52
  5. Step 5: Solve for x
    x = 2,340,812,901.52/73,748.94
  6. Step 6: Final answer
    x = 31,740.29

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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.