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Finding the Fourth Proportional to 61,918.74, 85,426.99 and 37,728.09

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Solution

The fourth proportional to 61,918.74, 85,426.99 and 37,728.09 is: 52,052.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,918.74 : 85,426.99 = 37,728.09 : x
  2. Step 2: Convert to fraction form
    61,918.74/85,426.99 = 37,728.09/x
  3. Step 3: Cross multiply
    61,918.74x = 85,426.99 × 37,728.09
  4. Step 4: Simplify right side
    61,918.74x = 3,222,997,072.83
  5. Step 5: Solve for x
    x = 3,222,997,072.83/61,918.74
  6. Step 6: Final answer
    x = 52,052.05

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1.5x scale

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.