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Finding the Fourth Proportional to 51,010.31, 70,393.72 and 28,348.84

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Solution

The fourth proportional to 51,010.31, 70,393.72 and 28,348.84 is: 39,121.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,010.31 : 70,393.72 = 28,348.84 : x
  2. Step 2: Convert to fraction form
    51,010.31/70,393.72 = 28,348.84/x
  3. Step 3: Cross multiply
    51,010.31x = 70,393.72 × 28,348.84
  4. Step 4: Simplify right side
    51,010.31x = 1,995,580,305.28
  5. Step 5: Solve for x
    x = 1,995,580,305.28/51,010.31
  6. Step 6: Final answer
    x = 39,121.12

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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.