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Finding the Fourth Proportional to 82,818.20, 124,227.30 and 72,976.70

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Solution

The fourth proportional to 82,818.20, 124,227.30 and 72,976.70 is: 109,465.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,818.20 : 124,227.30 = 72,976.70 : x
  2. Step 2: Convert to fraction form
    82,818.20/124,227.30 = 72,976.70/x
  3. Step 3: Cross multiply
    82,818.20x = 124,227.30 × 72,976.70
  4. Step 4: Simplify right side
    82,818.20x = 9,065,698,403.91
  5. Step 5: Solve for x
    x = 9,065,698,403.91/82,818.20
  6. Step 6: Final answer
    x = 109,465.05

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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.