Home / 66,405.36-99,627.48-21,425.85

Finding the Fourth Proportional to 66,405.36, 99,627.48 and 21,425.85

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Solution

The fourth proportional to 66,405.36, 99,627.48 and 21,425.85 is: 32,145.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,405.36 : 99,627.48 = 21,425.85 : x
  2. Step 2: Convert to fraction form
    66,405.36/99,627.48 = 21,425.85/x
  3. Step 3: Cross multiply
    66,405.36x = 99,627.48 × 21,425.85
  4. Step 4: Simplify right side
    66,405.36x = 2,134,603,442.36
  5. Step 5: Solve for x
    x = 2,134,603,442.36/66,405.36
  6. Step 6: Final answer
    x = 32,145.05

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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.