Home / 87,311.31-130,967.70-47,846.91

Finding the Fourth Proportional to 87,311.31, 130,967.70 and 47,846.91

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Solution

The fourth proportional to 87,311.31, 130,967.70 and 47,846.91 is: 71,770.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,311.31 : 130,967.70 = 47,846.91 : x
  2. Step 2: Convert to fraction form
    87,311.31/130,967.70 = 47,846.91/x
  3. Step 3: Cross multiply
    87,311.31x = 130,967.70 × 47,846.91
  4. Step 4: Simplify right side
    87,311.31x = 6,266,399,754.81
  5. Step 5: Solve for x
    x = 6,266,399,754.81/87,311.31
  6. Step 6: Final answer
    x = 71,770.77

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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.