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Finding the Fourth Proportional to 89,485.88, 123,493.40 and 49,202.55

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Solution

The fourth proportional to 89,485.88, 123,493.40 and 49,202.55 is: 67,901.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,485.88 : 123,493.40 = 49,202.55 : x
  2. Step 2: Convert to fraction form
    89,485.88/123,493.40 = 49,202.55/x
  3. Step 3: Cross multiply
    89,485.88x = 123,493.40 × 49,202.55
  4. Step 4: Simplify right side
    89,485.88x = 6,076,190,126.67
  5. Step 5: Solve for x
    x = 6,076,190,126.67/89,485.88
  6. Step 6: Final answer
    x = 67,901.11

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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.