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Finding the Fourth Proportional to 66,720.24, 100,100.88 and 35,532

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Solution

The fourth proportional to 66,720.24, 100,100.88 and 35,532 is: 53,308.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,720.24 : 100,100.88 = 35,532 : x
  2. Step 2: Convert to fraction form
    66,720.24/100,100.88 = 35,532/x
  3. Step 3: Cross multiply
    66,720.24x = 100,100.88 × 35,532
  4. Step 4: Simplify right side
    66,720.24x = 3,556,784,468.16
  5. Step 5: Solve for x
    x = 3,556,784,468.16/66,720.24
  6. Step 6: Final answer
    x = 53,308.93

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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.