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Finding the Fourth Proportional to 74,150.90, 111,215.55 and 21,554.90

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Solution

The fourth proportional to 74,150.90, 111,215.55 and 21,554.90 is: 32,329.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,150.90 : 111,215.55 = 21,554.90 : x
  2. Step 2: Convert to fraction form
    74,150.90/111,215.55 = 21,554.90/x
  3. Step 3: Cross multiply
    74,150.90x = 111,215.55 × 21,554.90
  4. Step 4: Simplify right side
    74,150.90x = 2,397,240,058.70
  5. Step 5: Solve for x
    x = 2,397,240,058.70/74,150.90
  6. Step 6: Final answer
    x = 32,329.21

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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.