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Finding the Fourth Proportional to 85,893.89, 118,492.74 and 57,226.86

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Solution

The fourth proportional to 85,893.89, 118,492.74 and 57,226.86 is: 78,945.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,893.89 : 118,492.74 = 57,226.86 : x
  2. Step 2: Convert to fraction form
    85,893.89/118,492.74 = 57,226.86/x
  3. Step 3: Cross multiply
    85,893.89x = 118,492.74 × 57,226.86
  4. Step 4: Simplify right side
    85,893.89x = 6,780,967,443.00
  5. Step 5: Solve for x
    x = 6,780,967,443.00/85,893.89
  6. Step 6: Final answer
    x = 78,945.87

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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.