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Finding the Fourth Proportional to 69,886.80, 96,422.72 and 63,150.80

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Solution

The fourth proportional to 69,886.80, 96,422.72 and 63,150.80 is: 87,129.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,886.80 : 96,422.72 = 63,150.80 : x
  2. Step 2: Convert to fraction form
    69,886.80/96,422.72 = 63,150.80/x
  3. Step 3: Cross multiply
    69,886.80x = 96,422.72 × 63,150.80
  4. Step 4: Simplify right side
    69,886.80x = 6,089,171,906.18
  5. Step 5: Solve for x
    x = 6,089,171,906.18/69,886.80
  6. Step 6: Final answer
    x = 87,129.07

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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.