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Finding the Fourth Proportional to 84,884.70, 127,384.65 and 55,230.30

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Solution

The fourth proportional to 84,884.70, 127,384.65 and 55,230.30 is: 82,882.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,884.70 : 127,384.65 = 55,230.30 : x
  2. Step 2: Convert to fraction form
    84,884.70/127,384.65 = 55,230.30/x
  3. Step 3: Cross multiply
    84,884.70x = 127,384.65 × 55,230.30
  4. Step 4: Simplify right side
    84,884.70x = 7,035,492,434.90
  5. Step 5: Solve for x
    x = 7,035,492,434.90/84,884.70
  6. Step 6: Final answer
    x = 82,882.93

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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.