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Finding the Fourth Proportional to 35,455.40, 53,207.40 and 19,660.40

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Solution

The fourth proportional to 35,455.40, 53,207.40 and 19,660.40 is: 29,504.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,455.40 : 53,207.40 = 19,660.40 : x
  2. Step 2: Convert to fraction form
    35,455.40/53,207.40 = 19,660.40/x
  3. Step 3: Cross multiply
    35,455.40x = 53,207.40 × 19,660.40
  4. Step 4: Simplify right side
    35,455.40x = 1,046,078,766.96
  5. Step 5: Solve for x
    x = 1,046,078,766.96/35,455.40
  6. Step 6: Final answer
    x = 29,504.07

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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.