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Finding the Fourth Proportional to 43,266.80, 64,900.20 and 26,645.60

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Solution

The fourth proportional to 43,266.80, 64,900.20 and 26,645.60 is: 39,968.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,266.80 : 64,900.20 = 26,645.60 : x
  2. Step 2: Convert to fraction form
    43,266.80/64,900.20 = 26,645.60/x
  3. Step 3: Cross multiply
    43,266.80x = 64,900.20 × 26,645.60
  4. Step 4: Simplify right side
    43,266.80x = 1,729,304,769.12
  5. Step 5: Solve for x
    x = 1,729,304,769.12/43,266.80
  6. Step 6: Final answer
    x = 39,968.40

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1.5x scale

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.