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Finding the Fourth Proportional to 65,111.70, 89,858.60 and 36,434.08

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Solution

The fourth proportional to 65,111.70, 89,858.60 and 36,434.08 is: 50,281.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,111.70 : 89,858.60 = 36,434.08 : x
  2. Step 2: Convert to fraction form
    65,111.70/89,858.60 = 36,434.08/x
  3. Step 3: Cross multiply
    65,111.70x = 89,858.60 × 36,434.08
  4. Step 4: Simplify right side
    65,111.70x = 3,273,915,421.09
  5. Step 5: Solve for x
    x = 3,273,915,421.09/65,111.70
  6. Step 6: Final answer
    x = 50,281.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.