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Finding the Fourth Proportional to 51,310.20, 70,811.20 and 28,649.16

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Solution

The fourth proportional to 51,310.20, 70,811.20 and 28,649.16 is: 39,537.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,310.20 : 70,811.20 = 28,649.16 : x
  2. Step 2: Convert to fraction form
    51,310.20/70,811.20 = 28,649.16/x
  3. Step 3: Cross multiply
    51,310.20x = 70,811.20 × 28,649.16
  4. Step 4: Simplify right side
    51,310.20x = 2,028,681,398.59
  5. Step 5: Solve for x
    x = 2,028,681,398.59/51,310.20
  6. Step 6: Final answer
    x = 39,537.59

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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.