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Finding the Fourth Proportional to 43,699.61, 65,549.49 and 18,723.47

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Solution

The fourth proportional to 43,699.61, 65,549.49 and 18,723.47 is: 28,085.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,699.61 : 65,549.49 = 18,723.47 : x
  2. Step 2: Convert to fraction form
    43,699.61/65,549.49 = 18,723.47/x
  3. Step 3: Cross multiply
    43,699.61x = 65,549.49 × 18,723.47
  4. Step 4: Simplify right side
    43,699.61x = 1,227,313,511.57
  5. Step 5: Solve for x
    x = 1,227,313,511.57/43,699.61
  6. Step 6: Final answer
    x = 28,085.23

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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.