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Finding the Fourth Proportional to 74,351.78, 102,608.43 and 42,520.22

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Solution

The fourth proportional to 74,351.78, 102,608.43 and 42,520.22 is: 58,679.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,351.78 : 102,608.43 = 42,520.22 : x
  2. Step 2: Convert to fraction form
    74,351.78/102,608.43 = 42,520.22/x
  3. Step 3: Cross multiply
    74,351.78x = 102,608.43 × 42,520.22
  4. Step 4: Simplify right side
    74,351.78x = 4,362,933,017.45
  5. Step 5: Solve for x
    x = 4,362,933,017.45/74,351.78
  6. Step 6: Final answer
    x = 58,679.60

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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.