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Finding the Fourth Proportional to 64,550.48, 89,070 and 36,250.72

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Solution

The fourth proportional to 64,550.48, 89,070 and 36,250.72 is: 50,020.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,550.48 : 89,070 = 36,250.72 : x
  2. Step 2: Convert to fraction form
    64,550.48/89,070 = 36,250.72/x
  3. Step 3: Cross multiply
    64,550.48x = 89,070 × 36,250.72
  4. Step 4: Simplify right side
    64,550.48x = 3,228,851,630.40
  5. Step 5: Solve for x
    x = 3,228,851,630.40/64,550.48
  6. Step 6: Final answer
    x = 50,020.57

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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.