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Finding the Fourth Proportional to 60,221.53, 90,373.74 and 20,778.67

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Solution

The fourth proportional to 60,221.53, 90,373.74 and 20,778.67 is: 31,182.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,221.53 : 90,373.74 = 20,778.67 : x
  2. Step 2: Convert to fraction form
    60,221.53/90,373.74 = 20,778.67/x
  3. Step 3: Cross multiply
    60,221.53x = 90,373.74 × 20,778.67
  4. Step 4: Simplify right side
    60,221.53x = 1,877,846,120.13
  5. Step 5: Solve for x
    x = 1,877,846,120.13/60,221.53
  6. Step 6: Final answer
    x = 31,182.31

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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.