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Finding the Fourth Proportional to 54,175.75, 74,762.72 and 30,300.90

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Solution

The fourth proportional to 54,175.75, 74,762.72 and 30,300.90 is: 41,815.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,175.75 : 74,762.72 = 30,300.90 : x
  2. Step 2: Convert to fraction form
    54,175.75/74,762.72 = 30,300.90/x
  3. Step 3: Cross multiply
    54,175.75x = 74,762.72 × 30,300.90
  4. Step 4: Simplify right side
    54,175.75x = 2,265,377,328.63
  5. Step 5: Solve for x
    x = 2,265,377,328.63/54,175.75
  6. Step 6: Final answer
    x = 41,815.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.