Home / 51,387.39-70,926.03-31,240

Finding the Fourth Proportional to 51,387.39, 70,926.03 and 31,240

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Solution

The fourth proportional to 51,387.39, 70,926.03 and 31,240 is: 43,118.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,387.39 : 70,926.03 = 31,240 : x
  2. Step 2: Convert to fraction form
    51,387.39/70,926.03 = 31,240/x
  3. Step 3: Cross multiply
    51,387.39x = 70,926.03 × 31,240
  4. Step 4: Simplify right side
    51,387.39x = 2,215,729,177.20
  5. Step 5: Solve for x
    x = 2,215,729,177.20/51,387.39
  6. Step 6: Final answer
    x = 43,118.15

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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.