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Finding the Fourth Proportional to 66,906.63, 92,331.05 and 38,612.32

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Solution

The fourth proportional to 66,906.63, 92,331.05 and 38,612.32 is: 53,284.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,906.63 : 92,331.05 = 38,612.32 : x
  2. Step 2: Convert to fraction form
    66,906.63/92,331.05 = 38,612.32/x
  3. Step 3: Cross multiply
    66,906.63x = 92,331.05 × 38,612.32
  4. Step 4: Simplify right side
    66,906.63x = 3,565,116,048.54
  5. Step 5: Solve for x
    x = 3,565,116,048.54/66,906.63
  6. Step 6: Final answer
    x = 53,284.94

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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.