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Finding the Fourth Proportional to 35,303, 48,722.46 and 20,399

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Solution

The fourth proportional to 35,303, 48,722.46 and 20,399 is: 28,153.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,303 : 48,722.46 = 20,399 : x
  2. Step 2: Convert to fraction form
    35,303/48,722.46 = 20,399/x
  3. Step 3: Cross multiply
    35,303x = 48,722.46 × 20,399
  4. Step 4: Simplify right side
    35,303x = 993,889,461.54
  5. Step 5: Solve for x
    x = 993,889,461.54/35,303
  6. Step 6: Final answer
    x = 28,153.12

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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.