Home / 56,387.28-77,811.08-31,234.96

Finding the Fourth Proportional to 56,387.28, 77,811.08 and 31,234.96

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Solution

The fourth proportional to 56,387.28, 77,811.08 and 31,234.96 is: 43,102.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,387.28 : 77,811.08 = 31,234.96 : x
  2. Step 2: Convert to fraction form
    56,387.28/77,811.08 = 31,234.96/x
  3. Step 3: Cross multiply
    56,387.28x = 77,811.08 × 31,234.96
  4. Step 4: Simplify right side
    56,387.28x = 2,430,425,971.36
  5. Step 5: Solve for x
    x = 2,430,425,971.36/56,387.28
  6. Step 6: Final answer
    x = 43,102.38

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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.