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Finding the Fourth Proportional to 51,388.01, 70,926.90 and 31,240.63

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Solution

The fourth proportional to 51,388.01, 70,926.90 and 31,240.63 is: 43,119.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,388.01 : 70,926.90 = 31,240.63 : x
  2. Step 2: Convert to fraction form
    51,388.01/70,926.90 = 31,240.63/x
  3. Step 3: Cross multiply
    51,388.01x = 70,926.90 × 31,240.63
  4. Step 4: Simplify right side
    51,388.01x = 2,215,801,039.95
  5. Step 5: Solve for x
    x = 2,215,801,039.95/51,388.01
  6. Step 6: Final answer
    x = 43,119.03

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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.