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Finding the Fourth Proportional to 64,976.70, 89,666.72 and 36,294.54

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Solution

The fourth proportional to 64,976.70, 89,666.72 and 36,294.54 is: 50,085.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,976.70 : 89,666.72 = 36,294.54 : x
  2. Step 2: Convert to fraction form
    64,976.70/89,666.72 = 36,294.54/x
  3. Step 3: Cross multiply
    64,976.70x = 89,666.72 × 36,294.54
  4. Step 4: Simplify right side
    64,976.70x = 3,254,412,355.71
  5. Step 5: Solve for x
    x = 3,254,412,355.71/64,976.70
  6. Step 6: Final answer
    x = 50,085.84

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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.