Home / 77,640.40-116,548.20-51,396.40

Finding the Fourth Proportional to 77,640.40, 116,548.20 and 51,396.40

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Solution

The fourth proportional to 77,640.40, 116,548.20 and 51,396.40 is: 77,152.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,640.40 : 116,548.20 = 51,396.40 : x
  2. Step 2: Convert to fraction form
    77,640.40/116,548.20 = 51,396.40/x
  3. Step 3: Cross multiply
    77,640.40x = 116,548.20 × 51,396.40
  4. Step 4: Simplify right side
    77,640.40x = 5,990,157,906.48
  5. Step 5: Solve for x
    x = 5,990,157,906.48/77,640.40
  6. Step 6: Final answer
    x = 77,152.59

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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.