Home / 51,678.50-71,327.43-31,531.05

Finding the Fourth Proportional to 51,678.50, 71,327.43 and 31,531.05

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Solution

The fourth proportional to 51,678.50, 71,327.43 and 31,531.05 is: 43,519.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,678.50 : 71,327.43 = 31,531.05 : x
  2. Step 2: Convert to fraction form
    51,678.50/71,327.43 = 31,531.05/x
  3. Step 3: Cross multiply
    51,678.50x = 71,327.43 × 31,531.05
  4. Step 4: Simplify right side
    51,678.50x = 2,249,028,761.70
  5. Step 5: Solve for x
    x = 2,249,028,761.70/51,678.50
  6. Step 6: Final answer
    x = 43,519.63

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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.