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Finding the Fourth Proportional to 71,767.68, 99,039.96 and 43,453.68

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Solution

The fourth proportional to 71,767.68, 99,039.96 and 43,453.68 is: 59,966.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,767.68 : 99,039.96 = 43,453.68 : x
  2. Step 2: Convert to fraction form
    71,767.68/99,039.96 = 43,453.68/x
  3. Step 3: Cross multiply
    71,767.68x = 99,039.96 × 43,453.68
  4. Step 4: Simplify right side
    71,767.68x = 4,303,650,729.05
  5. Step 5: Solve for x
    x = 4,303,650,729.05/71,767.68
  6. Step 6: Final answer
    x = 59,966.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.