Home / 56,439.87-77,890.51-31,289.37

Finding the Fourth Proportional to 56,439.87, 77,890.51 and 31,289.37

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Solution

The fourth proportional to 56,439.87, 77,890.51 and 31,289.37 is: 43,181.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,439.87 : 77,890.51 = 31,289.37 : x
  2. Step 2: Convert to fraction form
    56,439.87/77,890.51 = 31,289.37/x
  3. Step 3: Cross multiply
    56,439.87x = 77,890.51 × 31,289.37
  4. Step 4: Simplify right side
    56,439.87x = 2,437,144,597.43
  5. Step 5: Solve for x
    x = 2,437,144,597.43/56,439.87
  6. Step 6: Final answer
    x = 43,181.26

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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.