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Finding the Fourth Proportional to 51,396.03, 70,921.13 and 28,732.68

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Solution

The fourth proportional to 51,396.03, 70,921.13 and 28,732.68 is: 39,648.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,396.03 : 70,921.13 = 28,732.68 : x
  2. Step 2: Convert to fraction form
    51,396.03/70,921.13 = 28,732.68/x
  3. Step 3: Cross multiply
    51,396.03x = 70,921.13 × 28,732.68
  4. Step 4: Simplify right side
    51,396.03x = 2,037,753,989.87
  5. Step 5: Solve for x
    x = 2,037,753,989.87/51,396.03
  6. Step 6: Final answer
    x = 39,648.08

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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.