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Finding the Fourth Proportional to 70,648.44, 106,225.20 and 65,169.60

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Solution

The fourth proportional to 70,648.44, 106,225.20 and 65,169.60 is: 97,987.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,648.44 : 106,225.20 = 65,169.60 : x
  2. Step 2: Convert to fraction form
    70,648.44/106,225.20 = 65,169.60/x
  3. Step 3: Cross multiply
    70,648.44x = 106,225.20 × 65,169.60
  4. Step 4: Simplify right side
    70,648.44x = 6,922,653,793.92
  5. Step 5: Solve for x
    x = 6,922,653,793.92/70,648.44
  6. Step 6: Final answer
    x = 97,987.36

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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.