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Finding the Fourth Proportional to 35,441.80, 53,205.90 and 19,659.40

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Solution

The fourth proportional to 35,441.80, 53,205.90 and 19,659.40 is: 29,513.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,441.80 : 53,205.90 = 19,659.40 : x
  2. Step 2: Convert to fraction form
    35,441.80/53,205.90 = 19,659.40/x
  3. Step 3: Cross multiply
    35,441.80x = 53,205.90 × 19,659.40
  4. Step 4: Simplify right side
    35,441.80x = 1,045,996,070.46
  5. Step 5: Solve for x
    x = 1,045,996,070.46/35,441.80
  6. Step 6: Final answer
    x = 29,513.06

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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.