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Finding the Fourth Proportional to 78,211.66, 107,532.44 and 69,632.14

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Solution

The fourth proportional to 78,211.66, 107,532.44 and 69,632.14 is: 95,736.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,211.66 : 107,532.44 = 69,632.14 : x
  2. Step 2: Convert to fraction form
    78,211.66/107,532.44 = 69,632.14/x
  3. Step 3: Cross multiply
    78,211.66x = 107,532.44 × 69,632.14
  4. Step 4: Simplify right side
    78,211.66x = 7,487,713,916.62
  5. Step 5: Solve for x
    x = 7,487,713,916.62/78,211.66
  6. Step 6: Final answer
    x = 95,736.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.