Home / 77,817.64-116,716.72-21,661.96

Finding the Fourth Proportional to 77,817.64, 116,716.72 and 21,661.96

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Solution

The fourth proportional to 77,817.64, 116,716.72 and 21,661.96 is: 32,490.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,817.64 : 116,716.72 = 21,661.96 : x
  2. Step 2: Convert to fraction form
    77,817.64/116,716.72 = 21,661.96/x
  3. Step 3: Cross multiply
    77,817.64x = 116,716.72 × 21,661.96
  4. Step 4: Simplify right side
    77,817.64x = 2,528,312,919.97
  5. Step 5: Solve for x
    x = 2,528,312,919.97/77,817.64
  6. Step 6: Final answer
    x = 32,490.23

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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.