Home / 56,730.07-78,286.83-31,235.90

Finding the Fourth Proportional to 56,730.07, 78,286.83 and 31,235.90

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Solution

The fourth proportional to 56,730.07, 78,286.83 and 31,235.90 is: 43,105.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,730.07 : 78,286.83 = 31,235.90 : x
  2. Step 2: Convert to fraction form
    56,730.07/78,286.83 = 31,235.90/x
  3. Step 3: Cross multiply
    56,730.07x = 78,286.83 × 31,235.90
  4. Step 4: Simplify right side
    56,730.07x = 2,445,359,593.20
  5. Step 5: Solve for x
    x = 2,445,359,593.20/56,730.07
  6. Step 6: Final answer
    x = 43,105.18

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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.