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Finding the Fourth Proportional to 51,296.48, 70,821.16 and 39,336.80

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Solution

The fourth proportional to 51,296.48, 70,821.16 and 39,336.80 is: 54,309.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,296.48 : 70,821.16 = 39,336.80 : x
  2. Step 2: Convert to fraction form
    51,296.48/70,821.16 = 39,336.80/x
  3. Step 3: Cross multiply
    51,296.48x = 70,821.16 × 39,336.80
  4. Step 4: Simplify right side
    51,296.48x = 2,785,877,806.69
  5. Step 5: Solve for x
    x = 2,785,877,806.69/51,296.48
  6. Step 6: Final answer
    x = 54,309.34

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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.