Home / 66,072.48-91,182.78-37,778.16

Finding the Fourth Proportional to 66,072.48, 91,182.78 and 37,778.16

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Solution

The fourth proportional to 66,072.48, 91,182.78 and 37,778.16 is: 52,135.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,072.48 : 91,182.78 = 37,778.16 : x
  2. Step 2: Convert to fraction form
    66,072.48/91,182.78 = 37,778.16/x
  3. Step 3: Cross multiply
    66,072.48x = 91,182.78 × 37,778.16
  4. Step 4: Simplify right side
    66,072.48x = 3,444,717,652.08
  5. Step 5: Solve for x
    x = 3,444,717,652.08/66,072.48
  6. Step 6: Final answer
    x = 52,135.44

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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.