Home / 77,659.65-116,318.73-64,179.87

Finding the Fourth Proportional to 77,659.65, 116,318.73 and 64,179.87

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Solution

The fourth proportional to 77,659.65, 116,318.73 and 64,179.87 is: 96,128.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,659.65 : 116,318.73 = 64,179.87 : x
  2. Step 2: Convert to fraction form
    77,659.65/116,318.73 = 64,179.87/x
  3. Step 3: Cross multiply
    77,659.65x = 116,318.73 × 64,179.87
  4. Step 4: Simplify right side
    77,659.65x = 7,465,320,969.97
  5. Step 5: Solve for x
    x = 7,465,320,969.97/77,659.65
  6. Step 6: Final answer
    x = 96,128.70

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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.