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Finding the Fourth Proportional to 43,311, 64,966.56 and 10,479

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Solution

The fourth proportional to 43,311, 64,966.56 and 10,479 is: 15,718.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,311 : 64,966.56 = 10,479 : x
  2. Step 2: Convert to fraction form
    43,311/64,966.56 = 10,479/x
  3. Step 3: Cross multiply
    43,311x = 64,966.56 × 10,479
  4. Step 4: Simplify right side
    43,311x = 680,784,582.24
  5. Step 5: Solve for x
    x = 680,784,582.24/43,311
  6. Step 6: Final answer
    x = 15,718.51

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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.