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Finding the Fourth Proportional to 285,036.92, 427,569.12 and 74,675.04

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Solution

The fourth proportional to 285,036.92, 427,569.12 and 74,675.04 is: 112,016.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,036.92 : 427,569.12 = 74,675.04 : x
  2. Step 2: Convert to fraction form
    285,036.92/427,569.12 = 74,675.04/x
  3. Step 3: Cross multiply
    285,036.92x = 427,569.12 × 74,675.04
  4. Step 4: Simplify right side
    285,036.92x = 31,928,741,138.76
  5. Step 5: Solve for x
    x = 31,928,741,138.76/285,036.92
  6. Step 6: Final answer
    x = 112,016.16

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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.