Home / 74,420.20-111,642.60-34,479.10

Finding the Fourth Proportional to 74,420.20, 111,642.60 and 34,479.10

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Solution

The fourth proportional to 74,420.20, 111,642.60 and 34,479.10 is: 51,724.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,420.20 : 111,642.60 = 34,479.10 : x
  2. Step 2: Convert to fraction form
    74,420.20/111,642.60 = 34,479.10/x
  3. Step 3: Cross multiply
    74,420.20x = 111,642.60 × 34,479.10
  4. Step 4: Simplify right side
    74,420.20x = 3,849,336,369.66
  5. Step 5: Solve for x
    x = 3,849,336,369.66/74,420.20
  6. Step 6: Final answer
    x = 51,724.35

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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.