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Finding the Fourth Proportional to 85,292.67, 127,893.72 and 26,112.45

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Solution

The fourth proportional to 85,292.67, 127,893.72 and 26,112.45 is: 39,154.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,292.67 : 127,893.72 = 26,112.45 : x
  2. Step 2: Convert to fraction form
    85,292.67/127,893.72 = 26,112.45/x
  3. Step 3: Cross multiply
    85,292.67x = 127,893.72 × 26,112.45
  4. Step 4: Simplify right side
    85,292.67x = 3,339,618,368.81
  5. Step 5: Solve for x
    x = 3,339,618,368.81/85,292.67
  6. Step 6: Final answer
    x = 39,154.81

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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.