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Finding the Fourth Proportional to 60,019.99, 90,034.37 and 20,576.77

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Solution

The fourth proportional to 60,019.99, 90,034.37 and 20,576.77 is: 30,866.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,019.99 : 90,034.37 = 20,576.77 : x
  2. Step 2: Convert to fraction form
    60,019.99/90,034.37 = 20,576.77/x
  3. Step 3: Cross multiply
    60,019.99x = 90,034.37 × 20,576.77
  4. Step 4: Simplify right side
    60,019.99x = 1,852,616,523.58
  5. Step 5: Solve for x
    x = 1,852,616,523.58/60,019.99
  6. Step 6: Final answer
    x = 30,866.66

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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.