Home / 85,129.99-117,479.38-49,340.76

Finding the Fourth Proportional to 85,129.99, 117,479.38 and 49,340.76

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Solution

The fourth proportional to 85,129.99, 117,479.38 and 49,340.76 is: 68,090.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,129.99 : 117,479.38 = 49,340.76 : x
  2. Step 2: Convert to fraction form
    85,129.99/117,479.38 = 49,340.76/x
  3. Step 3: Cross multiply
    85,129.99x = 117,479.38 × 49,340.76
  4. Step 4: Simplify right side
    85,129.99x = 5,796,521,182.78
  5. Step 5: Solve for x
    x = 5,796,521,182.78/85,129.99
  6. Step 6: Final answer
    x = 68,090.24

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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.