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Finding the Fourth Proportional to 51,322.46, 70,820.95 and 28,659.68

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Solution

The fourth proportional to 51,322.46, 70,820.95 and 28,659.68 is: 39,548.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,322.46 : 70,820.95 = 28,659.68 : x
  2. Step 2: Convert to fraction form
    51,322.46/70,820.95 = 28,659.68/x
  3. Step 3: Cross multiply
    51,322.46x = 70,820.95 × 28,659.68
  4. Step 4: Simplify right side
    51,322.46x = 2,029,705,764.30
  5. Step 5: Solve for x
    x = 2,029,705,764.30/51,322.46
  6. Step 6: Final answer
    x = 39,548.10

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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.