Home / 72,190.56-99,625.16-40,360.80

Finding the Fourth Proportional to 72,190.56, 99,625.16 and 40,360.80

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Solution

The fourth proportional to 72,190.56, 99,625.16 and 40,360.80 is: 55,699.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,190.56 : 99,625.16 = 40,360.80 : x
  2. Step 2: Convert to fraction form
    72,190.56/99,625.16 = 40,360.80/x
  3. Step 3: Cross multiply
    72,190.56x = 99,625.16 × 40,360.80
  4. Step 4: Simplify right side
    72,190.56x = 4,020,951,157.73
  5. Step 5: Solve for x
    x = 4,020,951,157.73/72,190.56
  6. Step 6: Final answer
    x = 55,699.13

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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.