Home / 77,997.72-116,984.16-21,831.78

Finding the Fourth Proportional to 77,997.72, 116,984.16 and 21,831.78

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Solution

The fourth proportional to 77,997.72, 116,984.16 and 21,831.78 is: 32,744.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,997.72 : 116,984.16 = 21,831.78 : x
  2. Step 2: Convert to fraction form
    77,997.72/116,984.16 = 21,831.78/x
  3. Step 3: Cross multiply
    77,997.72x = 116,984.16 × 21,831.78
  4. Step 4: Simplify right side
    77,997.72x = 2,553,972,444.60
  5. Step 5: Solve for x
    x = 2,553,972,444.60/77,997.72
  6. Step 6: Final answer
    x = 32,744.19

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1.5x scale

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.