Home / 74,320.45-111,466.65-21,012

Finding the Fourth Proportional to 74,320.45, 111,466.65 and 21,012

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Solution

The fourth proportional to 74,320.45, 111,466.65 and 21,012 is: 31,514.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,320.45 : 111,466.65 = 21,012 : x
  2. Step 2: Convert to fraction form
    74,320.45/111,466.65 = 21,012/x
  3. Step 3: Cross multiply
    74,320.45x = 111,466.65 × 21,012
  4. Step 4: Simplify right side
    74,320.45x = 2,342,137,249.80
  5. Step 5: Solve for x
    x = 2,342,137,249.80/74,320.45
  6. Step 6: Final answer
    x = 31,514.04

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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.