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Finding the Fourth Proportional to 82,588.64, 113,920.92 and 68,755.68

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Solution

The fourth proportional to 82,588.64, 113,920.92 and 68,755.68 is: 94,840.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,588.64 : 113,920.92 = 68,755.68 : x
  2. Step 2: Convert to fraction form
    82,588.64/113,920.92 = 68,755.68/x
  3. Step 3: Cross multiply
    82,588.64x = 113,920.92 × 68,755.68
  4. Step 4: Simplify right side
    82,588.64x = 7,832,710,320.83
  5. Step 5: Solve for x
    x = 7,832,710,320.83/82,588.64
  6. Step 6: Final answer
    x = 94,840.04

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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.