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Finding the Fourth Proportional to 51,212.97, 70,672.77 and 28,551.87

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Solution

The fourth proportional to 51,212.97, 70,672.77 and 28,551.87 is: 39,400.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,212.97 : 70,672.77 = 28,551.87 : x
  2. Step 2: Convert to fraction form
    51,212.97/70,672.77 = 28,551.87/x
  3. Step 3: Cross multiply
    51,212.97x = 70,672.77 × 28,551.87
  4. Step 4: Simplify right side
    51,212.97x = 2,017,839,741.58
  5. Step 5: Solve for x
    x = 2,017,839,741.58/51,212.97
  6. Step 6: Final answer
    x = 39,400.95

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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.