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Finding the Fourth Proportional to 64,771.04, 89,395.44 and 61,816.16

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Solution

The fourth proportional to 64,771.04, 89,395.44 and 61,816.16 is: 85,317.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,771.04 : 89,395.44 = 61,816.16 : x
  2. Step 2: Convert to fraction form
    64,771.04/89,395.44 = 61,816.16/x
  3. Step 3: Cross multiply
    64,771.04x = 89,395.44 × 61,816.16
  4. Step 4: Simplify right side
    64,771.04x = 5,526,082,822.31
  5. Step 5: Solve for x
    x = 5,526,082,822.31/64,771.04
  6. Step 6: Final answer
    x = 85,317.19

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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.