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Finding the Fourth Proportional to 66,903.62, 100,390.54 and 29,489.32

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Solution

The fourth proportional to 66,903.62, 100,390.54 and 29,489.32 is: 44,249.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,903.62 : 100,390.54 = 29,489.32 : x
  2. Step 2: Convert to fraction form
    66,903.62/100,390.54 = 29,489.32/x
  3. Step 3: Cross multiply
    66,903.62x = 100,390.54 × 29,489.32
  4. Step 4: Simplify right side
    66,903.62x = 2,960,448,301.39
  5. Step 5: Solve for x
    x = 2,960,448,301.39/66,903.62
  6. Step 6: Final answer
    x = 44,249.45

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1.5x scale

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.