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Finding the Fourth Proportional to 43,572.74, 65,352.24 and 11,985.16

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Solution

The fourth proportional to 43,572.74, 65,352.24 and 11,985.16 is: 17,975.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,572.74 : 65,352.24 = 11,985.16 : x
  2. Step 2: Convert to fraction form
    43,572.74/65,352.24 = 11,985.16/x
  3. Step 3: Cross multiply
    43,572.74x = 65,352.24 × 11,985.16
  4. Step 4: Simplify right side
    43,572.74x = 783,257,052.76
  5. Step 5: Solve for x
    x = 783,257,052.76/43,572.74
  6. Step 6: Final answer
    x = 17,975.85

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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.