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Finding the Fourth Proportional to 85,902.03, 128,893.68 and 41,503.86

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Solution

The fourth proportional to 85,902.03, 128,893.68 and 41,503.86 is: 62,275.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,902.03 : 128,893.68 = 41,503.86 : x
  2. Step 2: Convert to fraction form
    85,902.03/128,893.68 = 41,503.86/x
  3. Step 3: Cross multiply
    85,902.03x = 128,893.68 × 41,503.86
  4. Step 4: Simplify right side
    85,902.03x = 5,349,585,249.60
  5. Step 5: Solve for x
    x = 5,349,585,249.60/85,902.03
  6. Step 6: Final answer
    x = 62,275.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.