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Finding the Fourth Proportional to 64,936.80, 97,405.20 and 53,263.20

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Solution

The fourth proportional to 64,936.80, 97,405.20 and 53,263.20 is: 79,894.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,936.80 : 97,405.20 = 53,263.20 : x
  2. Step 2: Convert to fraction form
    64,936.80/97,405.20 = 53,263.20/x
  3. Step 3: Cross multiply
    64,936.80x = 97,405.20 × 53,263.20
  4. Step 4: Simplify right side
    64,936.80x = 5,188,112,648.64
  5. Step 5: Solve for x
    x = 5,188,112,648.64/64,936.80
  6. Step 6: Final answer
    x = 79,894.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.