Home / 75,813.68-104,650.44-56,663.12

Finding the Fourth Proportional to 75,813.68, 104,650.44 and 56,663.12

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Solution

The fourth proportional to 75,813.68, 104,650.44 and 56,663.12 is: 78,215.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,813.68 : 104,650.44 = 56,663.12 : x
  2. Step 2: Convert to fraction form
    75,813.68/104,650.44 = 56,663.12/x
  3. Step 3: Cross multiply
    75,813.68x = 104,650.44 × 56,663.12
  4. Step 4: Simplify right side
    75,813.68x = 5,929,820,439.77
  5. Step 5: Solve for x
    x = 5,929,820,439.77/75,813.68
  6. Step 6: Final answer
    x = 78,215.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.