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Finding the Fourth Proportional to 84,743.70, 127,115.55 and 34,807.20

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Solution

The fourth proportional to 84,743.70, 127,115.55 and 34,807.20 is: 52,210.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,743.70 : 127,115.55 = 34,807.20 : x
  2. Step 2: Convert to fraction form
    84,743.70/127,115.55 = 34,807.20/x
  3. Step 3: Cross multiply
    84,743.70x = 127,115.55 × 34,807.20
  4. Step 4: Simplify right side
    84,743.70x = 4,424,536,371.96
  5. Step 5: Solve for x
    x = 4,424,536,371.96/84,743.70
  6. Step 6: Final answer
    x = 52,210.80

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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.