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Finding the Fourth Proportional to 52,435.08, 78,609.08 and 20,825.64

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Solution

The fourth proportional to 52,435.08, 78,609.08 and 20,825.64 is: 31,221.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,435.08 : 78,609.08 = 20,825.64 : x
  2. Step 2: Convert to fraction form
    52,435.08/78,609.08 = 20,825.64/x
  3. Step 3: Cross multiply
    52,435.08x = 78,609.08 × 20,825.64
  4. Step 4: Simplify right side
    52,435.08x = 1,637,084,452.88
  5. Step 5: Solve for x
    x = 1,637,084,452.88/52,435.08
  6. Step 6: Final answer
    x = 31,221.17

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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.