Home / 56,686.60-78,228.21-31,195.90

Finding the Fourth Proportional to 56,686.60, 78,228.21 and 31,195.90

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Solution

The fourth proportional to 56,686.60, 78,228.21 and 31,195.90 is: 43,050.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,686.60 : 78,228.21 = 31,195.90 : x
  2. Step 2: Convert to fraction form
    56,686.60/78,228.21 = 31,195.90/x
  3. Step 3: Cross multiply
    56,686.60x = 78,228.21 × 31,195.90
  4. Step 4: Simplify right side
    56,686.60x = 2,440,399,025.20
  5. Step 5: Solve for x
    x = 2,440,399,025.20/56,686.60
  6. Step 6: Final answer
    x = 43,050.73

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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.