Home / 42,729.53-64,097.93-11,143.78

Finding the Fourth Proportional to 42,729.53, 64,097.93 and 11,143.78

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Solution

The fourth proportional to 42,729.53, 64,097.93 and 11,143.78 is: 16,716.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,729.53 : 64,097.93 = 11,143.78 : x
  2. Step 2: Convert to fraction form
    42,729.53/64,097.93 = 11,143.78/x
  3. Step 3: Cross multiply
    42,729.53x = 64,097.93 × 11,143.78
  4. Step 4: Simplify right side
    42,729.53x = 714,293,097.99
  5. Step 5: Solve for x
    x = 714,293,097.99/42,729.53
  6. Step 6: Final answer
    x = 16,716.62

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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.