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Finding the Fourth Proportional to 64,762.36, 89,365.95 and 36,079.11

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Solution

The fourth proportional to 64,762.36, 89,365.95 and 36,079.11 is: 49,785.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,762.36 : 89,365.95 = 36,079.11 : x
  2. Step 2: Convert to fraction form
    64,762.36/89,365.95 = 36,079.11/x
  3. Step 3: Cross multiply
    64,762.36x = 89,365.95 × 36,079.11
  4. Step 4: Simplify right side
    64,762.36x = 3,224,243,940.30
  5. Step 5: Solve for x
    x = 3,224,243,940.30/64,762.36
  6. Step 6: Final answer
    x = 49,785.77

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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.