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Finding the Fourth Proportional to 61,992.20, 85,551.90 and 38,126.77

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Solution

The fourth proportional to 61,992.20, 85,551.90 and 38,126.77 is: 52,616.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,992.20 : 85,551.90 = 38,126.77 : x
  2. Step 2: Convert to fraction form
    61,992.20/85,551.90 = 38,126.77/x
  3. Step 3: Cross multiply
    61,992.20x = 85,551.90 × 38,126.77
  4. Step 4: Simplify right side
    61,992.20x = 3,261,817,257.51
  5. Step 5: Solve for x
    x = 3,261,817,257.51/61,992.20
  6. Step 6: Final answer
    x = 52,616.57

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Half scale
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Double scale
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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.