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Finding the Fourth Proportional to 74,448.21, 111,672.32 and 21,894.60

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Solution

The fourth proportional to 74,448.21, 111,672.32 and 21,894.60 is: 32,841.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,448.21 : 111,672.32 = 21,894.60 : x
  2. Step 2: Convert to fraction form
    74,448.21/111,672.32 = 21,894.60/x
  3. Step 3: Cross multiply
    74,448.21x = 111,672.32 × 21,894.60
  4. Step 4: Simplify right side
    74,448.21x = 2,445,021,209.93
  5. Step 5: Solve for x
    x = 2,445,021,209.93/74,448.21
  6. Step 6: Final answer
    x = 32,841.91

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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.