Home / 78,724.99-118,082.62-31,976.65

Finding the Fourth Proportional to 78,724.99, 118,082.62 and 31,976.65

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Solution

The fourth proportional to 78,724.99, 118,082.62 and 31,976.65 is: 47,963.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,724.99 : 118,082.62 = 31,976.65 : x
  2. Step 2: Convert to fraction form
    78,724.99/118,082.62 = 31,976.65/x
  3. Step 3: Cross multiply
    78,724.99x = 118,082.62 × 31,976.65
  4. Step 4: Simplify right side
    78,724.99x = 3,775,886,610.82
  5. Step 5: Solve for x
    x = 3,775,886,610.82/78,724.99
  6. Step 6: Final answer
    x = 47,963.00

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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.