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Finding the Fourth Proportional to 61,918.56, 85,448.88 and 37,711.20

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Solution

The fourth proportional to 61,918.56, 85,448.88 and 37,711.20 is: 52,042.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,918.56 : 85,448.88 = 37,711.20 : x
  2. Step 2: Convert to fraction form
    61,918.56/85,448.88 = 37,711.20/x
  3. Step 3: Cross multiply
    61,918.56x = 85,448.88 × 37,711.20
  4. Step 4: Simplify right side
    61,918.56x = 3,222,379,803.46
  5. Step 5: Solve for x
    x = 3,222,379,803.46/61,918.56
  6. Step 6: Final answer
    x = 52,042.23

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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.