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Finding the Fourth Proportional to 43,527, 65,291.22 and 18,903

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Solution

The fourth proportional to 43,527, 65,291.22 and 18,903 is: 28,354.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,527 : 65,291.22 = 18,903 : x
  2. Step 2: Convert to fraction form
    43,527/65,291.22 = 18,903/x
  3. Step 3: Cross multiply
    43,527x = 65,291.22 × 18,903
  4. Step 4: Simplify right side
    43,527x = 1,234,199,931.66
  5. Step 5: Solve for x
    x = 1,234,199,931.66/43,527
  6. Step 6: Final answer
    x = 28,354.81

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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.