Home / 51,715.32-77,419.89-31,930.26

Finding the Fourth Proportional to 51,715.32, 77,419.89 and 31,930.26

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Solution

The fourth proportional to 51,715.32, 77,419.89 and 31,930.26 is: 47,800.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,715.32 : 77,419.89 = 31,930.26 : x
  2. Step 2: Convert to fraction form
    51,715.32/77,419.89 = 31,930.26/x
  3. Step 3: Cross multiply
    51,715.32x = 77,419.89 × 31,930.26
  4. Step 4: Simplify right side
    51,715.32x = 2,472,037,216.87
  5. Step 5: Solve for x
    x = 2,472,037,216.87/51,715.32
  6. Step 6: Final answer
    x = 47,800.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.