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Finding the Fourth Proportional to 85,549.37, 128,277.88 and 60,638.22

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Solution

The fourth proportional to 85,549.37, 128,277.88 and 60,638.22 is: 90,924.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,549.37 : 128,277.88 = 60,638.22 : x
  2. Step 2: Convert to fraction form
    85,549.37/128,277.88 = 60,638.22/x
  3. Step 3: Cross multiply
    85,549.37x = 128,277.88 × 60,638.22
  4. Step 4: Simplify right side
    85,549.37x = 7,778,542,156.98
  5. Step 5: Solve for x
    x = 7,778,542,156.98/85,549.37
  6. Step 6: Final answer
    x = 90,924.60

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.