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Finding the Fourth Proportional to 85,123.31, 127,544.52 and 49,484.62

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Solution

The fourth proportional to 85,123.31, 127,544.52 and 49,484.62 is: 74,145.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,123.31 : 127,544.52 = 49,484.62 : x
  2. Step 2: Convert to fraction form
    85,123.31/127,544.52 = 49,484.62/x
  3. Step 3: Cross multiply
    85,123.31x = 127,544.52 × 49,484.62
  4. Step 4: Simplify right side
    85,123.31x = 6,311,492,450.28
  5. Step 5: Solve for x
    x = 6,311,492,450.28/85,123.31
  6. Step 6: Final answer
    x = 74,145.29

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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.