Home / 66,162.90-91,319.22-40,691.16

Finding the Fourth Proportional to 66,162.90, 91,319.22 and 40,691.16

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Solution

The fourth proportional to 66,162.90, 91,319.22 and 40,691.16 is: 56,162.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,162.90 : 91,319.22 = 40,691.16 : x
  2. Step 2: Convert to fraction form
    66,162.90/91,319.22 = 40,691.16/x
  3. Step 3: Cross multiply
    66,162.90x = 91,319.22 × 40,691.16
  4. Step 4: Simplify right side
    66,162.90x = 3,715,884,992.10
  5. Step 5: Solve for x
    x = 3,715,884,992.10/66,162.90
  6. Step 6: Final answer
    x = 56,162.67

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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.