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Finding the Fourth Proportional to 35,613.80, 53,459.10 and 20,061.80

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Solution

The fourth proportional to 35,613.80, 53,459.10 and 20,061.80 is: 30,114.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,613.80 : 53,459.10 = 20,061.80 : x
  2. Step 2: Convert to fraction form
    35,613.80/53,459.10 = 20,061.80/x
  3. Step 3: Cross multiply
    35,613.80x = 53,459.10 × 20,061.80
  4. Step 4: Simplify right side
    35,613.80x = 1,072,485,772.38
  5. Step 5: Solve for x
    x = 1,072,485,772.38/35,613.80
  6. Step 6: Final answer
    x = 30,114.33

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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.