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Finding the Fourth Proportional to 43,256.76, 64,895.96 and 12,091.76

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Solution

The fourth proportional to 43,256.76, 64,895.96 and 12,091.76 is: 18,140.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,256.76 : 64,895.96 = 12,091.76 : x
  2. Step 2: Convert to fraction form
    43,256.76/64,895.96 = 12,091.76/x
  3. Step 3: Cross multiply
    43,256.76x = 64,895.96 × 12,091.76
  4. Step 4: Simplify right side
    43,256.76x = 784,706,373.29
  5. Step 5: Solve for x
    x = 784,706,373.29/43,256.76
  6. Step 6: Final answer
    x = 18,140.66

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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.