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Finding the Fourth Proportional to 35,859.60, 53,765.10 and 18,995.40

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Solution

The fourth proportional to 35,859.60, 53,765.10 and 18,995.40 is: 28,480.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,859.60 : 53,765.10 = 18,995.40 : x
  2. Step 2: Convert to fraction form
    35,859.60/53,765.10 = 18,995.40/x
  3. Step 3: Cross multiply
    35,859.60x = 53,765.10 × 18,995.40
  4. Step 4: Simplify right side
    35,859.60x = 1,021,289,580.54
  5. Step 5: Solve for x
    x = 1,021,289,580.54/35,859.60
  6. Step 6: Final answer
    x = 28,480.23

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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.