Home / 77,428.80-116,141.84-21,268.69

Finding the Fourth Proportional to 77,428.80, 116,141.84 and 21,268.69

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Solution

The fourth proportional to 77,428.80, 116,141.84 and 21,268.69 is: 31,902.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,428.80 : 116,141.84 = 21,268.69 : x
  2. Step 2: Convert to fraction form
    77,428.80/116,141.84 = 21,268.69/x
  3. Step 3: Cross multiply
    77,428.80x = 116,141.84 × 21,268.69
  4. Step 4: Simplify right side
    77,428.80x = 2,470,185,097.44
  5. Step 5: Solve for x
    x = 2,470,185,097.44/77,428.80
  6. Step 6: Final answer
    x = 31,902.66

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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.