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Finding the Fourth Proportional to 60,720, 91,093.44 and 25,689.60

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Solution

The fourth proportional to 60,720, 91,093.44 and 25,689.60 is: 38,540.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,720 : 91,093.44 = 25,689.60 : x
  2. Step 2: Convert to fraction form
    60,720/91,093.44 = 25,689.60/x
  3. Step 3: Cross multiply
    60,720x = 91,093.44 × 25,689.60
  4. Step 4: Simplify right side
    60,720x = 2,340,154,036.22
  5. Step 5: Solve for x
    x = 2,340,154,036.22/60,720
  6. Step 6: Final answer
    x = 38,540.09

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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.