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Finding the Fourth Proportional to 65,946.48, 91,006.20 and 36,138.48

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Solution

The fourth proportional to 65,946.48, 91,006.20 and 36,138.48 is: 49,871.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,946.48 : 91,006.20 = 36,138.48 : x
  2. Step 2: Convert to fraction form
    65,946.48/91,006.20 = 36,138.48/x
  3. Step 3: Cross multiply
    65,946.48x = 91,006.20 × 36,138.48
  4. Step 4: Simplify right side
    65,946.48x = 3,288,825,738.58
  5. Step 5: Solve for x
    x = 3,288,825,738.58/65,946.48
  6. Step 6: Final answer
    x = 49,871.13

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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.