Home / 77,686.91-116,530.37-30,972.59

Finding the Fourth Proportional to 77,686.91, 116,530.37 and 30,972.59

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Solution

The fourth proportional to 77,686.91, 116,530.37 and 30,972.59 is: 46,458.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,686.91 : 116,530.37 = 30,972.59 : x
  2. Step 2: Convert to fraction form
    77,686.91/116,530.37 = 30,972.59/x
  3. Step 3: Cross multiply
    77,686.91x = 116,530.37 × 30,972.59
  4. Step 4: Simplify right side
    77,686.91x = 3,609,247,243.16
  5. Step 5: Solve for x
    x = 3,609,247,243.16/77,686.91
  6. Step 6: Final answer
    x = 46,458.89

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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.