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Finding the Fourth Proportional to 60,071.93, 90,098.43 and 20,090.61

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Solution

The fourth proportional to 60,071.93, 90,098.43 and 20,090.61 is: 30,132.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,071.93 : 90,098.43 = 20,090.61 : x
  2. Step 2: Convert to fraction form
    60,071.93/90,098.43 = 20,090.61/x
  3. Step 3: Cross multiply
    60,071.93x = 90,098.43 × 20,090.61
  4. Step 4: Simplify right side
    60,071.93x = 1,810,132,418.74
  5. Step 5: Solve for x
    x = 1,810,132,418.74/60,071.93
  6. Step 6: Final answer
    x = 30,132.75

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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.