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Finding the Fourth Proportional to 43,276.80, 64,812.80 and 29,350.40

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Solution

The fourth proportional to 43,276.80, 64,812.80 and 29,350.40 is: 43,956.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,276.80 : 64,812.80 = 29,350.40 : x
  2. Step 2: Convert to fraction form
    43,276.80/64,812.80 = 29,350.40/x
  3. Step 3: Cross multiply
    43,276.80x = 64,812.80 × 29,350.40
  4. Step 4: Simplify right side
    43,276.80x = 1,902,281,605.12
  5. Step 5: Solve for x
    x = 1,902,281,605.12/43,276.80
  6. Step 6: Final answer
    x = 43,956.15

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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.