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Finding the Fourth Proportional to 74,574.62, 102,915.42 and 42,749.54

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Solution

The fourth proportional to 74,574.62, 102,915.42 and 42,749.54 is: 58,995.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,574.62 : 102,915.42 = 42,749.54 : x
  2. Step 2: Convert to fraction form
    74,574.62/102,915.42 = 42,749.54/x
  3. Step 3: Cross multiply
    74,574.62x = 102,915.42 × 42,749.54
  4. Step 4: Simplify right side
    74,574.62x = 4,399,586,863.91
  5. Step 5: Solve for x
    x = 4,399,586,863.91/74,574.62
  6. Step 6: Final answer
    x = 58,995.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.