Home / 51,518.97-71,102.16-31,387.68

Finding the Fourth Proportional to 51,518.97, 71,102.16 and 31,387.68

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Solution

The fourth proportional to 51,518.97, 71,102.16 and 31,387.68 is: 43,318.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,518.97 : 71,102.16 = 31,387.68 : x
  2. Step 2: Convert to fraction form
    51,518.97/71,102.16 = 31,387.68/x
  3. Step 3: Cross multiply
    51,518.97x = 71,102.16 × 31,387.68
  4. Step 4: Simplify right side
    51,518.97x = 2,231,731,845.39
  5. Step 5: Solve for x
    x = 2,231,731,845.39/51,518.97
  6. Step 6: Final answer
    x = 43,318.64

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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.