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Finding the Fourth Proportional to 91,993.76, 126,954.99 and 51,707.40

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Solution

The fourth proportional to 91,993.76, 126,954.99 and 51,707.40 is: 71,358.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,993.76 : 126,954.99 = 51,707.40 : x
  2. Step 2: Convert to fraction form
    91,993.76/126,954.99 = 51,707.40/x
  3. Step 3: Cross multiply
    91,993.76x = 126,954.99 × 51,707.40
  4. Step 4: Simplify right side
    91,993.76x = 6,564,512,449.93
  5. Step 5: Solve for x
    x = 6,564,512,449.93/91,993.76
  6. Step 6: Final answer
    x = 71,358.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.