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Finding the Fourth Proportional to 60,212.85, 90,319.47 and 20,230.68

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Solution

The fourth proportional to 60,212.85, 90,319.47 and 20,230.68 is: 30,346.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,212.85 : 90,319.47 = 20,230.68 : x
  2. Step 2: Convert to fraction form
    60,212.85/90,319.47 = 20,230.68/x
  3. Step 3: Cross multiply
    60,212.85x = 90,319.47 × 20,230.68
  4. Step 4: Simplify right side
    60,212.85x = 1,827,224,295.34
  5. Step 5: Solve for x
    x = 1,827,224,295.34/60,212.85
  6. Step 6: Final answer
    x = 30,346.09

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1.5x scale

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.