Home / 56,405.80-77,841.57-31,255.30

Finding the Fourth Proportional to 56,405.80, 77,841.57 and 31,255.30

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Solution

The fourth proportional to 56,405.80, 77,841.57 and 31,255.30 is: 43,133.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,405.80 : 77,841.57 = 31,255.30 : x
  2. Step 2: Convert to fraction form
    56,405.80/77,841.57 = 31,255.30/x
  3. Step 3: Cross multiply
    56,405.80x = 77,841.57 × 31,255.30
  4. Step 4: Simplify right side
    56,405.80x = 2,432,961,622.82
  5. Step 5: Solve for x
    x = 2,432,961,622.82/56,405.80
  6. Step 6: Final answer
    x = 43,133.18

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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.