Home / 56,520.11-77,997.21-31,369.61

Finding the Fourth Proportional to 56,520.11, 77,997.21 and 31,369.61

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Solution

The fourth proportional to 56,520.11, 77,997.21 and 31,369.61 is: 43,289.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,520.11 : 77,997.21 = 31,369.61 : x
  2. Step 2: Convert to fraction form
    56,520.11/77,997.21 = 31,369.61/x
  3. Step 3: Cross multiply
    56,520.11x = 77,997.21 × 31,369.61
  4. Step 4: Simplify right side
    56,520.11x = 2,446,742,058.79
  5. Step 5: Solve for x
    x = 2,446,742,058.79/56,520.11
  6. Step 6: Final answer
    x = 43,289.76

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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.