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Finding the Fourth Proportional to 64,764, 89,374.59 and 36,470.16

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Solution

The fourth proportional to 64,764, 89,374.59 and 36,470.16 is: 50,328.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,764 : 89,374.59 = 36,470.16 : x
  2. Step 2: Convert to fraction form
    64,764/89,374.59 = 36,470.16/x
  3. Step 3: Cross multiply
    64,764x = 89,374.59 × 36,470.16
  4. Step 4: Simplify right side
    64,764x = 3,259,505,597.23
  5. Step 5: Solve for x
    x = 3,259,505,597.23/64,764
  6. Step 6: Final answer
    x = 50,328.97

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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.