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Finding the Fourth Proportional to 60,549.36, 90,820.34 and 28,981.86

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Solution

The fourth proportional to 60,549.36, 90,820.34 and 28,981.86 is: 43,471.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,549.36 : 90,820.34 = 28,981.86 : x
  2. Step 2: Convert to fraction form
    60,549.36/90,820.34 = 28,981.86/x
  3. Step 3: Cross multiply
    60,549.36x = 90,820.34 × 28,981.86
  4. Step 4: Simplify right side
    60,549.36x = 2,632,142,379.03
  5. Step 5: Solve for x
    x = 2,632,142,379.03/60,549.36
  6. Step 6: Final answer
    x = 43,471.02

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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.