Home / 78,110.24-117,086.47-30,758.57

Finding the Fourth Proportional to 78,110.24, 117,086.47 and 30,758.57

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Solution

The fourth proportional to 78,110.24, 117,086.47 and 30,758.57 is: 46,106.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,110.24 : 117,086.47 = 30,758.57 : x
  2. Step 2: Convert to fraction form
    78,110.24/117,086.47 = 30,758.57/x
  3. Step 3: Cross multiply
    78,110.24x = 117,086.47 × 30,758.57
  4. Step 4: Simplify right side
    78,110.24x = 3,601,411,721.22
  5. Step 5: Solve for x
    x = 3,601,411,721.22/78,110.24
  6. Step 6: Final answer
    x = 46,106.78

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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.