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Finding the Fourth Proportional to 51,385.41, 70,913.14 and 28,728.17

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Solution

The fourth proportional to 51,385.41, 70,913.14 and 28,728.17 is: 39,645.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,385.41 : 70,913.14 = 28,728.17 : x
  2. Step 2: Convert to fraction form
    51,385.41/70,913.14 = 28,728.17/x
  3. Step 3: Cross multiply
    51,385.41x = 70,913.14 × 28,728.17
  4. Step 4: Simplify right side
    51,385.41x = 2,037,204,741.15
  5. Step 5: Solve for x
    x = 2,037,204,741.15/51,385.41
  6. Step 6: Final answer
    x = 39,645.59

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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.