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Finding the Fourth Proportional to 72,818.01, 109,190.48 and 42,432.99

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Solution

The fourth proportional to 72,818.01, 109,190.48 and 42,432.99 is: 63,628.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,818.01 : 109,190.48 = 42,432.99 : x
  2. Step 2: Convert to fraction form
    72,818.01/109,190.48 = 42,432.99/x
  3. Step 3: Cross multiply
    72,818.01x = 109,190.48 × 42,432.99
  4. Step 4: Simplify right side
    72,818.01x = 4,633,278,652.02
  5. Step 5: Solve for x
    x = 4,633,278,652.02/72,818.01
  6. Step 6: Final answer
    x = 63,628.20

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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.