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Finding the Fourth Proportional to 64,898.72, 89,600.77 and 49,762.28

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Solution

The fourth proportional to 64,898.72, 89,600.77 and 49,762.28 is: 68,703.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,898.72 : 89,600.77 = 49,762.28 : x
  2. Step 2: Convert to fraction form
    64,898.72/89,600.77 = 49,762.28/x
  3. Step 3: Cross multiply
    64,898.72x = 89,600.77 × 49,762.28
  4. Step 4: Simplify right side
    64,898.72x = 4,458,738,891.16
  5. Step 5: Solve for x
    x = 4,458,738,891.16/64,898.72
  6. Step 6: Final answer
    x = 68,703.03

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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.