Home / 56,730.80-78,287.87-31,236.64

Finding the Fourth Proportional to 56,730.80, 78,287.87 and 31,236.64

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Solution

The fourth proportional to 56,730.80, 78,287.87 and 31,236.64 is: 43,106.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,730.80 : 78,287.87 = 31,236.64 : x
  2. Step 2: Convert to fraction form
    56,730.80/78,287.87 = 31,236.64/x
  3. Step 3: Cross multiply
    56,730.80x = 78,287.87 × 31,236.64
  4. Step 4: Simplify right side
    56,730.80x = 2,445,449,659.65
  5. Step 5: Solve for x
    x = 2,445,449,659.65/56,730.80
  6. Step 6: Final answer
    x = 43,106.21

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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.