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Finding the Fourth Proportional to 60,326.88, 90,321.48 and 45,489.36

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Solution

The fourth proportional to 60,326.88, 90,321.48 and 45,489.36 is: 68,106.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,326.88 : 90,321.48 = 45,489.36 : x
  2. Step 2: Convert to fraction form
    60,326.88/90,321.48 = 45,489.36/x
  3. Step 3: Cross multiply
    60,326.88x = 90,321.48 × 45,489.36
  4. Step 4: Simplify right side
    60,326.88x = 4,108,666,319.45
  5. Step 5: Solve for x
    x = 4,108,666,319.45/60,326.88
  6. Step 6: Final answer
    x = 68,106.73

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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.