Home / 56,635.80-78,150.57-31,137.96

Finding the Fourth Proportional to 56,635.80, 78,150.57 and 31,137.96

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Solution

The fourth proportional to 56,635.80, 78,150.57 and 31,137.96 is: 42,966.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,635.80 : 78,150.57 = 31,137.96 : x
  2. Step 2: Convert to fraction form
    56,635.80/78,150.57 = 31,137.96/x
  3. Step 3: Cross multiply
    56,635.80x = 78,150.57 × 31,137.96
  4. Step 4: Simplify right side
    56,635.80x = 2,433,449,322.64
  5. Step 5: Solve for x
    x = 2,433,449,322.64/56,635.80
  6. Step 6: Final answer
    x = 42,966.63

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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.