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Finding the Fourth Proportional to 84,818.70, 127,228.05 and 49,389.30

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Solution

The fourth proportional to 84,818.70, 127,228.05 and 49,389.30 is: 74,083.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,818.70 : 127,228.05 = 49,389.30 : x
  2. Step 2: Convert to fraction form
    84,818.70/127,228.05 = 49,389.30/x
  3. Step 3: Cross multiply
    84,818.70x = 127,228.05 × 49,389.30
  4. Step 4: Simplify right side
    84,818.70x = 6,283,704,329.87
  5. Step 5: Solve for x
    x = 6,283,704,329.87/84,818.70
  6. Step 6: Final answer
    x = 74,083.95

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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.