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Finding the Fourth Proportional to 40,289.76, 60,429.84 and 10,709.76

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Solution

The fourth proportional to 40,289.76, 60,429.84 and 10,709.76 is: 16,063.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,289.76 : 60,429.84 = 10,709.76 : x
  2. Step 2: Convert to fraction form
    40,289.76/60,429.84 = 10,709.76/x
  3. Step 3: Cross multiply
    40,289.76x = 60,429.84 × 10,709.76
  4. Step 4: Simplify right side
    40,289.76x = 647,189,083.24
  5. Step 5: Solve for x
    x = 647,189,083.24/40,289.76
  6. Step 6: Final answer
    x = 16,063.36

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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.