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Finding the Fourth Proportional to 65,164.72, 89,928.48 and 36,876.28

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Solution

The fourth proportional to 65,164.72, 89,928.48 and 36,876.28 is: 50,889.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,164.72 : 89,928.48 = 36,876.28 : x
  2. Step 2: Convert to fraction form
    65,164.72/89,928.48 = 36,876.28/x
  3. Step 3: Cross multiply
    65,164.72x = 89,928.48 × 36,876.28
  4. Step 4: Simplify right side
    65,164.72x = 3,316,227,808.45
  5. Step 5: Solve for x
    x = 3,316,227,808.45/65,164.72
  6. Step 6: Final answer
    x = 50,889.93

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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.