Home / 51,622.12-77,480.70-31,939.12

Finding the Fourth Proportional to 51,622.12, 77,480.70 and 31,939.12

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Solution

The fourth proportional to 51,622.12, 77,480.70 and 31,939.12 is: 47,938.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,622.12 : 77,480.70 = 31,939.12 : x
  2. Step 2: Convert to fraction form
    51,622.12/77,480.70 = 31,939.12/x
  3. Step 3: Cross multiply
    51,622.12x = 77,480.70 × 31,939.12
  4. Step 4: Simplify right side
    51,622.12x = 2,474,665,374.98
  5. Step 5: Solve for x
    x = 2,474,665,374.98/51,622.12
  6. Step 6: Final answer
    x = 47,938.08

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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.