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Finding the Fourth Proportional to 90,745.34, 125,230.74 and 50,460.80

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Solution

The fourth proportional to 90,745.34, 125,230.74 and 50,460.80 is: 69,637.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,745.34 : 125,230.74 = 50,460.80 : x
  2. Step 2: Convert to fraction form
    90,745.34/125,230.74 = 50,460.80/x
  3. Step 3: Cross multiply
    90,745.34x = 125,230.74 × 50,460.80
  4. Step 4: Simplify right side
    90,745.34x = 6,319,243,324.99
  5. Step 5: Solve for x
    x = 6,319,243,324.99/90,745.34
  6. Step 6: Final answer
    x = 69,637.11

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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.