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Finding the Fourth Proportional to 73,746.93, 110,621 and 21,158.08

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Solution

The fourth proportional to 73,746.93, 110,621 and 21,158.08 is: 31,737.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,746.93 : 110,621 = 21,158.08 : x
  2. Step 2: Convert to fraction form
    73,746.93/110,621 = 21,158.08/x
  3. Step 3: Cross multiply
    73,746.93x = 110,621 × 21,158.08
  4. Step 4: Simplify right side
    73,746.93x = 2,340,527,967.68
  5. Step 5: Solve for x
    x = 2,340,527,967.68/73,746.93
  6. Step 6: Final answer
    x = 31,737.29

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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.