Home / 56,439.75-77,889.30-31,289.25

Finding the Fourth Proportional to 56,439.75, 77,889.30 and 31,289.25

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Solution

The fourth proportional to 56,439.75, 77,889.30 and 31,289.25 is: 43,180.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,439.75 : 77,889.30 = 31,289.25 : x
  2. Step 2: Convert to fraction form
    56,439.75/77,889.30 = 31,289.25/x
  3. Step 3: Cross multiply
    56,439.75x = 77,889.30 × 31,289.25
  4. Step 4: Simplify right side
    56,439.75x = 2,437,097,780.03
  5. Step 5: Solve for x
    x = 2,437,097,780.03/56,439.75
  6. Step 6: Final answer
    x = 43,180.52

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1.5x scale

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.