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Finding the Fourth Proportional to 51,360.28, 70,874.64 and 28,694.80

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Solution

The fourth proportional to 51,360.28, 70,874.64 and 28,694.80 is: 39,597.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,360.28 : 70,874.64 = 28,694.80 : x
  2. Step 2: Convert to fraction form
    51,360.28/70,874.64 = 28,694.80/x
  3. Step 3: Cross multiply
    51,360.28x = 70,874.64 × 28,694.80
  4. Step 4: Simplify right side
    51,360.28x = 2,033,733,619.87
  5. Step 5: Solve for x
    x = 2,033,733,619.87/51,360.28
  6. Step 6: Final answer
    x = 39,597.40

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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.