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Finding the Fourth Proportional to 72,086.44, 107,582.85 and 70,220.20

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Solution

The fourth proportional to 72,086.44, 107,582.85 and 70,220.20 is: 104,797.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,086.44 : 107,582.85 = 70,220.20 : x
  2. Step 2: Convert to fraction form
    72,086.44/107,582.85 = 70,220.20/x
  3. Step 3: Cross multiply
    72,086.44x = 107,582.85 × 70,220.20
  4. Step 4: Simplify right side
    72,086.44x = 7,554,489,243.57
  5. Step 5: Solve for x
    x = 7,554,489,243.57/72,086.44
  6. Step 6: Final answer
    x = 104,797.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.