Home / 51,486.90-71,039.66-31,343.55

Finding the Fourth Proportional to 51,486.90, 71,039.66 and 31,343.55

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Solution

The fourth proportional to 51,486.90, 71,039.66 and 31,343.55 is: 43,246.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,486.90 : 71,039.66 = 31,343.55 : x
  2. Step 2: Convert to fraction form
    51,486.90/71,039.66 = 31,343.55/x
  3. Step 3: Cross multiply
    51,486.90x = 71,039.66 × 31,343.55
  4. Step 4: Simplify right side
    51,486.90x = 2,226,635,135.19
  5. Step 5: Solve for x
    x = 2,226,635,135.19/51,486.90
  6. Step 6: Final answer
    x = 43,246.63

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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.