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Finding the Fourth Proportional to 49,670.40, 74,489.40 and 18,501.60

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Solution

The fourth proportional to 49,670.40, 74,489.40 and 18,501.60 is: 27,746.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,670.40 : 74,489.40 = 18,501.60 : x
  2. Step 2: Convert to fraction form
    49,670.40/74,489.40 = 18,501.60/x
  3. Step 3: Cross multiply
    49,670.40x = 74,489.40 × 18,501.60
  4. Step 4: Simplify right side
    49,670.40x = 1,378,173,083.04
  5. Step 5: Solve for x
    x = 1,378,173,083.04/49,670.40
  6. Step 6: Final answer
    x = 27,746.37

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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.