Home / 56,440.50-77,890.32-31,290

Finding the Fourth Proportional to 56,440.50, 77,890.32 and 31,290

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Solution

The fourth proportional to 56,440.50, 77,890.32 and 31,290 is: 43,181.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,440.50 : 77,890.32 = 31,290 : x
  2. Step 2: Convert to fraction form
    56,440.50/77,890.32 = 31,290/x
  3. Step 3: Cross multiply
    56,440.50x = 77,890.32 × 31,290
  4. Step 4: Simplify right side
    56,440.50x = 2,437,188,112.80
  5. Step 5: Solve for x
    x = 2,437,188,112.80/56,440.50
  6. Step 6: Final answer
    x = 43,181.55

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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.