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Finding the Fourth Proportional to 74,752.75, 112,129.53 and 19,348.75

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Solution

The fourth proportional to 74,752.75, 112,129.53 and 19,348.75 is: 29,023.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,752.75 : 112,129.53 = 19,348.75 : x
  2. Step 2: Convert to fraction form
    74,752.75/112,129.53 = 19,348.75/x
  3. Step 3: Cross multiply
    74,752.75x = 112,129.53 × 19,348.75
  4. Step 4: Simplify right side
    74,752.75x = 2,169,566,243.59
  5. Step 5: Solve for x
    x = 2,169,566,243.59/74,752.75
  6. Step 6: Final answer
    x = 29,023.23

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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.