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Finding the Fourth Proportional to 57,990.70, 80,025.81 and 34,118.91

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Solution

The fourth proportional to 57,990.70, 80,025.81 and 34,118.91 is: 47,083.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,990.70 : 80,025.81 = 34,118.91 : x
  2. Step 2: Convert to fraction form
    57,990.70/80,025.81 = 34,118.91/x
  3. Step 3: Cross multiply
    57,990.70x = 80,025.81 × 34,118.91
  4. Step 4: Simplify right side
    57,990.70x = 2,730,393,409.07
  5. Step 5: Solve for x
    x = 2,730,393,409.07/57,990.70
  6. Step 6: Final answer
    x = 47,083.30

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1.5x scale

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.