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Finding the Fourth Proportional to 60,539.86, 90,806.10 and 28,972.36

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Solution

The fourth proportional to 60,539.86, 90,806.10 and 28,972.36 is: 43,456.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,539.86 : 90,806.10 = 28,972.36 : x
  2. Step 2: Convert to fraction form
    60,539.86/90,806.10 = 28,972.36/x
  3. Step 3: Cross multiply
    60,539.86x = 90,806.10 × 28,972.36
  4. Step 4: Simplify right side
    60,539.86x = 2,630,867,019.40
  5. Step 5: Solve for x
    x = 2,630,867,019.40/60,539.86
  6. Step 6: Final answer
    x = 43,456.77

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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.