Home / 56,288.59-77,677.18-31,138.09

Finding the Fourth Proportional to 56,288.59, 77,677.18 and 31,138.09

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Solution

The fourth proportional to 56,288.59, 77,677.18 and 31,138.09 is: 42,969.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,288.59 : 77,677.18 = 31,138.09 : x
  2. Step 2: Convert to fraction form
    56,288.59/77,677.18 = 31,138.09/x
  3. Step 3: Cross multiply
    56,288.59x = 77,677.18 × 31,138.09
  4. Step 4: Simplify right side
    56,288.59x = 2,418,719,021.79
  5. Step 5: Solve for x
    x = 2,418,719,021.79/56,288.59
  6. Step 6: Final answer
    x = 42,969.97

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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.