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Finding the Fourth Proportional to 78,712.85, 118,097.47 and 33,715.33

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Solution

The fourth proportional to 78,712.85, 118,097.47 and 33,715.33 is: 50,585.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,712.85 : 118,097.47 = 33,715.33 : x
  2. Step 2: Convert to fraction form
    78,712.85/118,097.47 = 33,715.33/x
  3. Step 3: Cross multiply
    78,712.85x = 118,097.47 × 33,715.33
  4. Step 4: Simplify right side
    78,712.85x = 3,981,695,173.22
  5. Step 5: Solve for x
    x = 3,981,695,173.22/78,712.85
  6. Step 6: Final answer
    x = 50,585.07

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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.