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Finding the Fourth Proportional to 43,411, 65,124.96 and 18,450.76

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Solution

The fourth proportional to 43,411, 65,124.96 and 18,450.76 is: 27,679.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,411 : 65,124.96 = 18,450.76 : x
  2. Step 2: Convert to fraction form
    43,411/65,124.96 = 18,450.76/x
  3. Step 3: Cross multiply
    43,411x = 65,124.96 × 18,450.76
  4. Step 4: Simplify right side
    43,411x = 1,201,605,006.97
  5. Step 5: Solve for x
    x = 1,201,605,006.97/43,411
  6. Step 6: Final answer
    x = 27,679.74

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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.