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Finding the Fourth Proportional to 96,873.80, 133,731.30 and 64,662.20

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Solution

The fourth proportional to 96,873.80, 133,731.30 and 64,662.20 is: 89,264.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,873.80 : 133,731.30 = 64,662.20 : x
  2. Step 2: Convert to fraction form
    96,873.80/133,731.30 = 64,662.20/x
  3. Step 3: Cross multiply
    96,873.80x = 133,731.30 × 64,662.20
  4. Step 4: Simplify right side
    96,873.80x = 8,647,360,066.86
  5. Step 5: Solve for x
    x = 8,647,360,066.86/96,873.80
  6. Step 6: Final answer
    x = 89,264.18

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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.