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Finding the Fourth Proportional to 60,120.50, 90,195.60 and 18,567.50

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Solution

The fourth proportional to 60,120.50, 90,195.60 and 18,567.50 is: 27,855.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,120.50 : 90,195.60 = 18,567.50 : x
  2. Step 2: Convert to fraction form
    60,120.50/90,195.60 = 18,567.50/x
  3. Step 3: Cross multiply
    60,120.50x = 90,195.60 × 18,567.50
  4. Step 4: Simplify right side
    60,120.50x = 1,674,706,803
  5. Step 5: Solve for x
    x = 1,674,706,803/60,120.50
  6. Step 6: Final answer
    x = 27,855.84

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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.