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Finding the Fourth Proportional to 75,329.28, 112,987.44 and 28,582.56

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Solution

The fourth proportional to 75,329.28, 112,987.44 and 28,582.56 is: 42,871.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,329.28 : 112,987.44 = 28,582.56 : x
  2. Step 2: Convert to fraction form
    75,329.28/112,987.44 = 28,582.56/x
  3. Step 3: Cross multiply
    75,329.28x = 112,987.44 × 28,582.56
  4. Step 4: Simplify right side
    75,329.28x = 3,229,470,283.05
  5. Step 5: Solve for x
    x = 3,229,470,283.05/75,329.28
  6. Step 6: Final answer
    x = 42,871.38

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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.