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Finding the Fourth Proportional to 64,842.86, 89,477.78 and 36,555.50

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Solution

The fourth proportional to 64,842.86, 89,477.78 and 36,555.50 is: 50,443.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,842.86 : 89,477.78 = 36,555.50 : x
  2. Step 2: Convert to fraction form
    64,842.86/89,477.78 = 36,555.50/x
  3. Step 3: Cross multiply
    64,842.86x = 89,477.78 × 36,555.50
  4. Step 4: Simplify right side
    64,842.86x = 3,270,904,986.79
  5. Step 5: Solve for x
    x = 3,270,904,986.79/64,842.86
  6. Step 6: Final answer
    x = 50,443.56

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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.