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Finding the Fourth Proportional to 60,189.76, 90,300 and 38,159.68

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Solution

The fourth proportional to 60,189.76, 90,300 and 38,159.68 is: 57,249.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,189.76 : 90,300 = 38,159.68 : x
  2. Step 2: Convert to fraction form
    60,189.76/90,300 = 38,159.68/x
  3. Step 3: Cross multiply
    60,189.76x = 90,300 × 38,159.68
  4. Step 4: Simplify right side
    60,189.76x = 3,445,819,104
  5. Step 5: Solve for x
    x = 3,445,819,104/60,189.76
  6. Step 6: Final answer
    x = 57,249.26

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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.