Home / 72,543.83-100,110.51-40,712.72

Finding the Fourth Proportional to 72,543.83, 100,110.51 and 40,712.72

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Solution

The fourth proportional to 72,543.83, 100,110.51 and 40,712.72 is: 56,183.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,543.83 : 100,110.51 = 40,712.72 : x
  2. Step 2: Convert to fraction form
    72,543.83/100,110.51 = 40,712.72/x
  3. Step 3: Cross multiply
    72,543.83x = 100,110.51 × 40,712.72
  4. Step 4: Simplify right side
    72,543.83x = 4,075,770,662.13
  5. Step 5: Solve for x
    x = 4,075,770,662.13/72,543.83
  6. Step 6: Final answer
    x = 56,183.56

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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.