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Finding the Fourth Proportional to 60,023.86, 90,035.80 and 20,581.32

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Solution

The fourth proportional to 60,023.86, 90,035.80 and 20,581.32 is: 30,871.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,023.86 : 90,035.80 = 20,581.32 : x
  2. Step 2: Convert to fraction form
    60,023.86/90,035.80 = 20,581.32/x
  3. Step 3: Cross multiply
    60,023.86x = 90,035.80 × 20,581.32
  4. Step 4: Simplify right side
    60,023.86x = 1,853,055,611.26
  5. Step 5: Solve for x
    x = 1,853,055,611.26/60,023.86
  6. Step 6: Final answer
    x = 30,871.98

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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.