Home / 47,820.11-66,039.09-39,405.62

Finding the Fourth Proportional to 47,820.11, 66,039.09 and 39,405.62

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Solution

The fourth proportional to 47,820.11, 66,039.09 and 39,405.62 is: 54,418.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,820.11 : 66,039.09 = 39,405.62 : x
  2. Step 2: Convert to fraction form
    47,820.11/66,039.09 = 39,405.62/x
  3. Step 3: Cross multiply
    47,820.11x = 66,039.09 × 39,405.62
  4. Step 4: Simplify right side
    47,820.11x = 2,602,311,285.69
  5. Step 5: Solve for x
    x = 2,602,311,285.69/47,820.11
  6. Step 6: Final answer
    x = 54,418.76

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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.