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Finding the Fourth Proportional to 74,751.75, 112,128.03 and 19,347.75

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Solution

The fourth proportional to 74,751.75, 112,128.03 and 19,347.75 is: 29,021.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,751.75 : 112,128.03 = 19,347.75 : x
  2. Step 2: Convert to fraction form
    74,751.75/112,128.03 = 19,347.75/x
  3. Step 3: Cross multiply
    74,751.75x = 112,128.03 × 19,347.75
  4. Step 4: Simplify right side
    74,751.75x = 2,169,425,092.43
  5. Step 5: Solve for x
    x = 2,169,425,092.43/74,751.75
  6. Step 6: Final answer
    x = 29,021.73

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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.