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Finding the Fourth Proportional to 60,090.81, 90,138.59 and 17,971.56

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Solution

The fourth proportional to 60,090.81, 90,138.59 and 17,971.56 is: 26,958.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,090.81 : 90,138.59 = 17,971.56 : x
  2. Step 2: Convert to fraction form
    60,090.81/90,138.59 = 17,971.56/x
  3. Step 3: Cross multiply
    60,090.81x = 90,138.59 × 17,971.56
  4. Step 4: Simplify right side
    60,090.81x = 1,619,930,988.64
  5. Step 5: Solve for x
    x = 1,619,930,988.64/60,090.81
  6. Step 6: Final answer
    x = 26,958.05

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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.