Home / 78,601.05-117,901.56-45,299.88

Finding the Fourth Proportional to 78,601.05, 117,901.56 and 45,299.88

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Solution

The fourth proportional to 78,601.05, 117,901.56 and 45,299.88 is: 67,949.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,601.05 : 117,901.56 = 45,299.88 : x
  2. Step 2: Convert to fraction form
    78,601.05/117,901.56 = 45,299.88/x
  3. Step 3: Cross multiply
    78,601.05x = 117,901.56 × 45,299.88
  4. Step 4: Simplify right side
    78,601.05x = 5,340,926,519.81
  5. Step 5: Solve for x
    x = 5,340,926,519.81/78,601.05
  6. Step 6: Final answer
    x = 67,949.81

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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.