Home / 30,949.66-42,729.16-29,178.46

Finding the Fourth Proportional to 30,949.66, 42,729.16 and 29,178.46

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Solution

The fourth proportional to 30,949.66, 42,729.16 and 29,178.46 is: 40,283.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,949.66 : 42,729.16 = 29,178.46 : x
  2. Step 2: Convert to fraction form
    30,949.66/42,729.16 = 29,178.46/x
  3. Step 3: Cross multiply
    30,949.66x = 42,729.16 × 29,178.46
  4. Step 4: Simplify right side
    30,949.66x = 1,246,771,085.89
  5. Step 5: Solve for x
    x = 1,246,771,085.89/30,949.66
  6. Step 6: Final answer
    x = 40,283.84

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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.