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Finding the Fourth Proportional to 57,704, 79,631.52 and 40,966.16

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Solution

The fourth proportional to 57,704, 79,631.52 and 40,966.16 is: 56,533.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,704 : 79,631.52 = 40,966.16 : x
  2. Step 2: Convert to fraction form
    57,704/79,631.52 = 40,966.16/x
  3. Step 3: Cross multiply
    57,704x = 79,631.52 × 40,966.16
  4. Step 4: Simplify right side
    57,704x = 3,262,197,589.36
  5. Step 5: Solve for x
    x = 3,262,197,589.36/57,704
  6. Step 6: Final answer
    x = 56,533.30

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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.