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Finding the Fourth Proportional to 72,311.96, 99,826.74 and 45,469.24

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Solution

The fourth proportional to 72,311.96, 99,826.74 and 45,469.24 is: 62,770.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,311.96 : 99,826.74 = 45,469.24 : x
  2. Step 2: Convert to fraction form
    72,311.96/99,826.74 = 45,469.24/x
  3. Step 3: Cross multiply
    72,311.96x = 99,826.74 × 45,469.24
  4. Step 4: Simplify right side
    72,311.96x = 4,539,045,999.48
  5. Step 5: Solve for x
    x = 4,539,045,999.48/72,311.96
  6. Step 6: Final answer
    x = 62,770.34

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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.