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Finding the Fourth Proportional to 30,542.31, 45,813.47 and 8,354.79

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Solution

The fourth proportional to 30,542.31, 45,813.47 and 8,354.79 is: 12,532.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,542.31 : 45,813.47 = 8,354.79 : x
  2. Step 2: Convert to fraction form
    30,542.31/45,813.47 = 8,354.79/x
  3. Step 3: Cross multiply
    30,542.31x = 45,813.47 × 8,354.79
  4. Step 4: Simplify right side
    30,542.31x = 382,761,879.25
  5. Step 5: Solve for x
    x = 382,761,879.25/30,542.31
  6. Step 6: Final answer
    x = 12,532.19

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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.