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Finding the Fourth Proportional to 74,745.56, 103,149.67 and 40,753.76

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Solution

The fourth proportional to 74,745.56, 103,149.67 and 40,753.76 is: 56,240.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,745.56 : 103,149.67 = 40,753.76 : x
  2. Step 2: Convert to fraction form
    74,745.56/103,149.67 = 40,753.76/x
  3. Step 3: Cross multiply
    74,745.56x = 103,149.67 × 40,753.76
  4. Step 4: Simplify right side
    74,745.56x = 4,203,736,895.26
  5. Step 5: Solve for x
    x = 4,203,736,895.26/74,745.56
  6. Step 6: Final answer
    x = 56,240.63

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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.