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Finding the Fourth Proportional to 75,313.32, 112,819.37 and 45,311.01

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Solution

The fourth proportional to 75,313.32, 112,819.37 and 45,311.01 is: 67,875.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,313.32 : 112,819.37 = 45,311.01 : x
  2. Step 2: Convert to fraction form
    75,313.32/112,819.37 = 45,311.01/x
  3. Step 3: Cross multiply
    75,313.32x = 112,819.37 × 45,311.01
  4. Step 4: Simplify right side
    75,313.32x = 5,111,959,375.71
  5. Step 5: Solve for x
    x = 5,111,959,375.71/75,313.32
  6. Step 6: Final answer
    x = 67,875.90

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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.