Home / 51,390.36-77,087.79-17,679.60

Finding the Fourth Proportional to 51,390.36, 77,087.79 and 17,679.60

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Solution

The fourth proportional to 51,390.36, 77,087.79 and 17,679.60 is: 26,520.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,390.36 : 77,087.79 = 17,679.60 : x
  2. Step 2: Convert to fraction form
    51,390.36/77,087.79 = 17,679.60/x
  3. Step 3: Cross multiply
    51,390.36x = 77,087.79 × 17,679.60
  4. Step 4: Simplify right side
    51,390.36x = 1,362,881,292.08
  5. Step 5: Solve for x
    x = 1,362,881,292.08/51,390.36
  6. Step 6: Final answer
    x = 26,520.17

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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.