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Finding the Fourth Proportional to 64,680.63, 89,259.24 and 36,386.32

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Solution

The fourth proportional to 64,680.63, 89,259.24 and 36,386.32 is: 50,213.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,680.63 : 89,259.24 = 36,386.32 : x
  2. Step 2: Convert to fraction form
    64,680.63/89,259.24 = 36,386.32/x
  3. Step 3: Cross multiply
    64,680.63x = 89,259.24 × 36,386.32
  4. Step 4: Simplify right side
    64,680.63x = 3,247,815,269.60
  5. Step 5: Solve for x
    x = 3,247,815,269.60/64,680.63
  6. Step 6: Final answer
    x = 50,213.11

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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.