Home / 47,978.18-66,151.05-39,450.50

Finding the Fourth Proportional to 47,978.18, 66,151.05 and 39,450.50

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Solution

The fourth proportional to 47,978.18, 66,151.05 and 39,450.50 is: 54,393.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,978.18 : 66,151.05 = 39,450.50 : x
  2. Step 2: Convert to fraction form
    47,978.18/66,151.05 = 39,450.50/x
  3. Step 3: Cross multiply
    47,978.18x = 66,151.05 × 39,450.50
  4. Step 4: Simplify right side
    47,978.18x = 2,609,691,998.03
  5. Step 5: Solve for x
    x = 2,609,691,998.03/47,978.18
  6. Step 6: Final answer
    x = 54,393.31

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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.