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Finding the Fourth Proportional to 35,740.80, 53,649.60 and 20,188.80

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Solution

The fourth proportional to 35,740.80, 53,649.60 and 20,188.80 is: 30,304.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,740.80 : 53,649.60 = 20,188.80 : x
  2. Step 2: Convert to fraction form
    35,740.80/53,649.60 = 20,188.80/x
  3. Step 3: Cross multiply
    35,740.80x = 53,649.60 × 20,188.80
  4. Step 4: Simplify right side
    35,740.80x = 1,083,121,044.48
  5. Step 5: Solve for x
    x = 1,083,121,044.48/35,740.80
  6. Step 6: Final answer
    x = 30,304.89

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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.