Home / 66,543.45-99,765.97-40,242.35

Finding the Fourth Proportional to 66,543.45, 99,765.97 and 40,242.35

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Solution

The fourth proportional to 66,543.45, 99,765.97 and 40,242.35 is: 60,333.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,543.45 : 99,765.97 = 40,242.35 : x
  2. Step 2: Convert to fraction form
    66,543.45/99,765.97 = 40,242.35/x
  3. Step 3: Cross multiply
    66,543.45x = 99,765.97 × 40,242.35
  4. Step 4: Simplify right side
    66,543.45x = 4,014,816,971.22
  5. Step 5: Solve for x
    x = 4,014,816,971.22/66,543.45
  6. Step 6: Final answer
    x = 60,333.76

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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.