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Finding the Fourth Proportional to 72,840.80, 100,522.20 and 41,010.86

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Solution

The fourth proportional to 72,840.80, 100,522.20 and 41,010.86 is: 56,596.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,840.80 : 100,522.20 = 41,010.86 : x
  2. Step 2: Convert to fraction form
    72,840.80/100,522.20 = 41,010.86/x
  3. Step 3: Cross multiply
    72,840.80x = 100,522.20 × 41,010.86
  4. Step 4: Simplify right side
    72,840.80x = 4,122,501,871.09
  5. Step 5: Solve for x
    x = 4,122,501,871.09/72,840.80
  6. Step 6: Final answer
    x = 56,596.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.