Home / 47,115.99-65,012.70-30,135.42

Finding the Fourth Proportional to 47,115.99, 65,012.70 and 30,135.42

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Solution

The fourth proportional to 47,115.99, 65,012.70 and 30,135.42 is: 41,582.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,115.99 : 65,012.70 = 30,135.42 : x
  2. Step 2: Convert to fraction form
    47,115.99/65,012.70 = 30,135.42/x
  3. Step 3: Cross multiply
    47,115.99x = 65,012.70 × 30,135.42
  4. Step 4: Simplify right side
    47,115.99x = 1,959,185,019.83
  5. Step 5: Solve for x
    x = 1,959,185,019.83/47,115.99
  6. Step 6: Final answer
    x = 41,582.17

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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.