Home / 56,129.43-77,453.10-30,977.31

Finding the Fourth Proportional to 56,129.43, 77,453.10 and 30,977.31

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Solution

The fourth proportional to 56,129.43, 77,453.10 and 30,977.31 is: 42,745.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,129.43 : 77,453.10 = 30,977.31 : x
  2. Step 2: Convert to fraction form
    56,129.43/77,453.10 = 30,977.31/x
  3. Step 3: Cross multiply
    56,129.43x = 77,453.10 × 30,977.31
  4. Step 4: Simplify right side
    56,129.43x = 2,399,288,689.16
  5. Step 5: Solve for x
    x = 2,399,288,689.16/56,129.43
  6. Step 6: Final answer
    x = 42,745.65

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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.