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Finding the Fourth Proportional to 60,143.67, 90,221.58 and 20,695.59

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Solution

The fourth proportional to 60,143.67, 90,221.58 and 20,695.59 is: 31,045.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,143.67 : 90,221.58 = 20,695.59 : x
  2. Step 2: Convert to fraction form
    60,143.67/90,221.58 = 20,695.59/x
  3. Step 3: Cross multiply
    60,143.67x = 90,221.58 × 20,695.59
  4. Step 4: Simplify right side
    60,143.67x = 1,867,188,828.83
  5. Step 5: Solve for x
    x = 1,867,188,828.83/60,143.67
  6. Step 6: Final answer
    x = 31,045.48

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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.