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Finding the Fourth Proportional to 61,345.20, 91,985.40 and 26,245.20

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Solution

The fourth proportional to 61,345.20, 91,985.40 and 26,245.20 is: 39,353.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,345.20 : 91,985.40 = 26,245.20 : x
  2. Step 2: Convert to fraction form
    61,345.20/91,985.40 = 26,245.20/x
  3. Step 3: Cross multiply
    61,345.20x = 91,985.40 × 26,245.20
  4. Step 4: Simplify right side
    61,345.20x = 2,414,175,220.08
  5. Step 5: Solve for x
    x = 2,414,175,220.08/61,345.20
  6. Step 6: Final answer
    x = 39,353.94

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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.