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Finding the Fourth Proportional to 91,763.92, 126,643.80 and 51,488.56

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Solution

The fourth proportional to 91,763.92, 126,643.80 and 51,488.56 is: 71,059.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,763.92 : 126,643.80 = 51,488.56 : x
  2. Step 2: Convert to fraction form
    91,763.92/126,643.80 = 51,488.56/x
  3. Step 3: Cross multiply
    91,763.92x = 126,643.80 × 51,488.56
  4. Step 4: Simplify right side
    91,763.92x = 6,520,706,894.93
  5. Step 5: Solve for x
    x = 6,520,706,894.93/91,763.92
  6. Step 6: Final answer
    x = 71,059.59

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1.5x scale

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.