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Finding the Fourth Proportional to 84,240.60, 116,157.25 and 68,879.22

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Solution

The fourth proportional to 84,240.60, 116,157.25 and 68,879.22 is: 94,975.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,240.60 : 116,157.25 = 68,879.22 : x
  2. Step 2: Convert to fraction form
    84,240.60/116,157.25 = 68,879.22/x
  3. Step 3: Cross multiply
    84,240.60x = 116,157.25 × 68,879.22
  4. Step 4: Simplify right side
    84,240.60x = 8,000,820,024.36
  5. Step 5: Solve for x
    x = 8,000,820,024.36/84,240.60
  6. Step 6: Final answer
    x = 94,975.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.