Home / 56,803.12-78,388.85-31,310.48

Finding the Fourth Proportional to 56,803.12, 78,388.85 and 31,310.48

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Solution

The fourth proportional to 56,803.12, 78,388.85 and 31,310.48 is: 43,208.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,803.12 : 78,388.85 = 31,310.48 : x
  2. Step 2: Convert to fraction form
    56,803.12/78,388.85 = 31,310.48/x
  3. Step 3: Cross multiply
    56,803.12x = 78,388.85 × 31,310.48
  4. Step 4: Simplify right side
    56,803.12x = 2,454,392,794.40
  5. Step 5: Solve for x
    x = 2,454,392,794.40/56,803.12
  6. Step 6: Final answer
    x = 43,208.77

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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.