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Finding the Fourth Proportional to 74,532.84, 111,799.34 and 19,128.84

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Solution

The fourth proportional to 74,532.84, 111,799.34 and 19,128.84 is: 28,693.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,532.84 : 111,799.34 = 19,128.84 : x
  2. Step 2: Convert to fraction form
    74,532.84/111,799.34 = 19,128.84/x
  3. Step 3: Cross multiply
    74,532.84x = 111,799.34 × 19,128.84
  4. Step 4: Simplify right side
    74,532.84x = 2,138,591,686.97
  5. Step 5: Solve for x
    x = 2,138,591,686.97/74,532.84
  6. Step 6: Final answer
    x = 28,693.28

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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.