Home / 78,322.46-117,305.39-61,349.52

Finding the Fourth Proportional to 78,322.46, 117,305.39 and 61,349.52

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Solution

The fourth proportional to 78,322.46, 117,305.39 and 61,349.52 is: 91,884.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,322.46 : 117,305.39 = 61,349.52 : x
  2. Step 2: Convert to fraction form
    78,322.46/117,305.39 = 61,349.52/x
  3. Step 3: Cross multiply
    78,322.46x = 117,305.39 × 61,349.52
  4. Step 4: Simplify right side
    78,322.46x = 7,196,629,063.17
  5. Step 5: Solve for x
    x = 7,196,629,063.17/78,322.46
  6. Step 6: Final answer
    x = 91,884.62

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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.