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Finding the Fourth Proportional to 43,437.60, 65,107.80 and 18,473.40

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Solution

The fourth proportional to 43,437.60, 65,107.80 and 18,473.40 is: 27,689.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,437.60 : 65,107.80 = 18,473.40 : x
  2. Step 2: Convert to fraction form
    43,437.60/65,107.80 = 18,473.40/x
  3. Step 3: Cross multiply
    43,437.60x = 65,107.80 × 18,473.40
  4. Step 4: Simplify right side
    43,437.60x = 1,202,762,432.52
  5. Step 5: Solve for x
    x = 1,202,762,432.52/43,437.60
  6. Step 6: Final answer
    x = 27,689.43

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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.