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Finding the Fourth Proportional to 43,372.40, 65,060.84 and 12,210.08

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Solution

The fourth proportional to 43,372.40, 65,060.84 and 12,210.08 is: 18,315.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,372.40 : 65,060.84 = 12,210.08 : x
  2. Step 2: Convert to fraction form
    43,372.40/65,060.84 = 12,210.08/x
  3. Step 3: Cross multiply
    43,372.40x = 65,060.84 × 12,210.08
  4. Step 4: Simplify right side
    43,372.40x = 794,398,061.27
  5. Step 5: Solve for x
    x = 794,398,061.27/43,372.40
  6. Step 6: Final answer
    x = 18,315.75

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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.