Home / 57,086.96-78,778.75-31,245.39

Finding the Fourth Proportional to 57,086.96, 78,778.75 and 31,245.39

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Solution

The fourth proportional to 57,086.96, 78,778.75 and 31,245.39 is: 43,117.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,086.96 : 78,778.75 = 31,245.39 : x
  2. Step 2: Convert to fraction form
    57,086.96/78,778.75 = 31,245.39/x
  3. Step 3: Cross multiply
    57,086.96x = 78,778.75 × 31,245.39
  4. Step 4: Simplify right side
    57,086.96x = 2,461,472,767.46
  5. Step 5: Solve for x
    x = 2,461,472,767.46/57,086.96
  6. Step 6: Final answer
    x = 43,117.95

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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.