Home / 78,227.07-117,349.71-28,330.66

Finding the Fourth Proportional to 78,227.07, 117,349.71 and 28,330.66

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Solution

The fourth proportional to 78,227.07, 117,349.71 and 28,330.66 is: 42,499.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,227.07 : 117,349.71 = 28,330.66 : x
  2. Step 2: Convert to fraction form
    78,227.07/117,349.71 = 28,330.66/x
  3. Step 3: Cross multiply
    78,227.07x = 117,349.71 × 28,330.66
  4. Step 4: Simplify right side
    78,227.07x = 3,324,594,735.11
  5. Step 5: Solve for x
    x = 3,324,594,735.11/78,227.07
  6. Step 6: Final answer
    x = 42,499.29

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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.