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Finding the Fourth Proportional to 84,046.70, 125,940.45 and 72,901.10

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Solution

The fourth proportional to 84,046.70, 125,940.45 and 72,901.10 is: 109,239.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,046.70 : 125,940.45 = 72,901.10 : x
  2. Step 2: Convert to fraction form
    84,046.70/125,940.45 = 72,901.10/x
  3. Step 3: Cross multiply
    84,046.70x = 125,940.45 × 72,901.10
  4. Step 4: Simplify right side
    84,046.70x = 9,181,197,339.50
  5. Step 5: Solve for x
    x = 9,181,197,339.50/84,046.70
  6. Step 6: Final answer
    x = 109,239.24

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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.