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Finding the Fourth Proportional to 51,445.98, 70,995.78 and 28,784.97

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Solution

The fourth proportional to 51,445.98, 70,995.78 and 28,784.97 is: 39,723.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,445.98 : 70,995.78 = 28,784.97 : x
  2. Step 2: Convert to fraction form
    51,445.98/70,995.78 = 28,784.97/x
  3. Step 3: Cross multiply
    51,445.98x = 70,995.78 × 28,784.97
  4. Step 4: Simplify right side
    51,445.98x = 2,043,611,397.43
  5. Step 5: Solve for x
    x = 2,043,611,397.43/51,445.98
  6. Step 6: Final answer
    x = 39,723.44

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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.