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Finding the Fourth Proportional to 64,973.70, 97,460.55 and 53,163.90

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Solution

The fourth proportional to 64,973.70, 97,460.55 and 53,163.90 is: 79,745.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,973.70 : 97,460.55 = 53,163.90 : x
  2. Step 2: Convert to fraction form
    64,973.70/97,460.55 = 53,163.90/x
  3. Step 3: Cross multiply
    64,973.70x = 97,460.55 × 53,163.90
  4. Step 4: Simplify right side
    64,973.70x = 5,181,382,934.15
  5. Step 5: Solve for x
    x = 5,181,382,934.15/64,973.70
  6. Step 6: Final answer
    x = 79,745.85

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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.