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Finding the Fourth Proportional to 35,356.40, 48,777.90 and 20,240.89

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Solution

The fourth proportional to 35,356.40, 48,777.90 and 20,240.89 is: 27,924.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,356.40 : 48,777.90 = 20,240.89 : x
  2. Step 2: Convert to fraction form
    35,356.40/48,777.90 = 20,240.89/x
  3. Step 3: Cross multiply
    35,356.40x = 48,777.90 × 20,240.89
  4. Step 4: Simplify right side
    35,356.40x = 987,307,910.48
  5. Step 5: Solve for x
    x = 987,307,910.48/35,356.40
  6. Step 6: Final answer
    x = 27,924.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.