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Finding the Fourth Proportional to 81,509.72, 122,264.99 and 37,105.41

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Solution

The fourth proportional to 81,509.72, 122,264.99 and 37,105.41 is: 55,658.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,509.72 : 122,264.99 = 37,105.41 : x
  2. Step 2: Convert to fraction form
    81,509.72/122,264.99 = 37,105.41/x
  3. Step 3: Cross multiply
    81,509.72x = 122,264.99 × 37,105.41
  4. Step 4: Simplify right side
    81,509.72x = 4,536,692,397.07
  5. Step 5: Solve for x
    x = 4,536,692,397.07/81,509.72
  6. Step 6: Final answer
    x = 55,658.30

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1.5x scale

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.