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Finding the Fourth Proportional to 48,360.88, 66,720.90 and 31,603.60

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Solution

The fourth proportional to 48,360.88, 66,720.90 and 31,603.60 is: 43,601.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,360.88 : 66,720.90 = 31,603.60 : x
  2. Step 2: Convert to fraction form
    48,360.88/66,720.90 = 31,603.60/x
  3. Step 3: Cross multiply
    48,360.88x = 66,720.90 × 31,603.60
  4. Step 4: Simplify right side
    48,360.88x = 2,108,620,468.44
  5. Step 5: Solve for x
    x = 2,108,620,468.44/48,360.88
  6. Step 6: Final answer
    x = 43,601.78

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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.