Home / 78,736.97-118,105.35-19,572.63

Finding the Fourth Proportional to 78,736.97, 118,105.35 and 19,572.63

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Solution

The fourth proportional to 78,736.97, 118,105.35 and 19,572.63 is: 29,358.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,736.97 : 118,105.35 = 19,572.63 : x
  2. Step 2: Convert to fraction form
    78,736.97/118,105.35 = 19,572.63/x
  3. Step 3: Cross multiply
    78,736.97x = 118,105.35 × 19,572.63
  4. Step 4: Simplify right side
    78,736.97x = 2,311,632,316.57
  5. Step 5: Solve for x
    x = 2,311,632,316.57/78,736.97
  6. Step 6: Final answer
    x = 29,358.92

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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.