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Finding the Fourth Proportional to 60,490.80, 90,647.10 and 43,885.80

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Solution

The fourth proportional to 60,490.80, 90,647.10 and 43,885.80 is: 65,764.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,490.80 : 90,647.10 = 43,885.80 : x
  2. Step 2: Convert to fraction form
    60,490.80/90,647.10 = 43,885.80/x
  3. Step 3: Cross multiply
    60,490.80x = 90,647.10 × 43,885.80
  4. Step 4: Simplify right side
    60,490.80x = 3,978,120,501.18
  5. Step 5: Solve for x
    x = 3,978,120,501.18/60,490.80
  6. Step 6: Final answer
    x = 65,764.06

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Why These Related Problems?

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