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Finding the Fourth Proportional to 51,134.84, 70,575.72 and 28,778.84

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Solution

The fourth proportional to 51,134.84, 70,575.72 and 28,778.84 is: 39,720.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,134.84 : 70,575.72 = 28,778.84 : x
  2. Step 2: Convert to fraction form
    51,134.84/70,575.72 = 28,778.84/x
  3. Step 3: Cross multiply
    51,134.84x = 70,575.72 × 28,778.84
  4. Step 4: Simplify right side
    51,134.84x = 2,031,087,353.76
  5. Step 5: Solve for x
    x = 2,031,087,353.76/51,134.84
  6. Step 6: Final answer
    x = 39,720.23

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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.