Home / 77,419.28-116,129.07-21,260.16

Finding the Fourth Proportional to 77,419.28, 116,129.07 and 21,260.16

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Solution

The fourth proportional to 77,419.28, 116,129.07 and 21,260.16 is: 31,890.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,419.28 : 116,129.07 = 21,260.16 : x
  2. Step 2: Convert to fraction form
    77,419.28/116,129.07 = 21,260.16/x
  3. Step 3: Cross multiply
    77,419.28x = 116,129.07 × 21,260.16
  4. Step 4: Simplify right side
    77,419.28x = 2,468,922,608.85
  5. Step 5: Solve for x
    x = 2,468,922,608.85/77,419.28
  6. Step 6: Final answer
    x = 31,890.28

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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.