Home / 56,777.12-78,358.60-31,286.12

Finding the Fourth Proportional to 56,777.12, 78,358.60 and 31,286.12

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Solution

The fourth proportional to 56,777.12, 78,358.60 and 31,286.12 is: 43,178.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,777.12 : 78,358.60 = 31,286.12 : x
  2. Step 2: Convert to fraction form
    56,777.12/78,358.60 = 31,286.12/x
  3. Step 3: Cross multiply
    56,777.12x = 78,358.60 × 31,286.12
  4. Step 4: Simplify right side
    56,777.12x = 2,451,536,562.63
  5. Step 5: Solve for x
    x = 2,451,536,562.63/56,777.12
  6. Step 6: Final answer
    x = 43,178.25

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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.