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Finding the Fourth Proportional to 60,072.48, 90,108 and 18,519.48

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Solution

The fourth proportional to 60,072.48, 90,108 and 18,519.48 is: 27,779.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,072.48 : 90,108 = 18,519.48 : x
  2. Step 2: Convert to fraction form
    60,072.48/90,108 = 18,519.48/x
  3. Step 3: Cross multiply
    60,072.48x = 90,108 × 18,519.48
  4. Step 4: Simplify right side
    60,072.48x = 1,668,753,303.84
  5. Step 5: Solve for x
    x = 1,668,753,303.84/60,072.48
  6. Step 6: Final answer
    x = 27,779.00

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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.