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Finding the Fourth Proportional to 61,163.60, 91,745.40 and 42,501.20

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Solution

The fourth proportional to 61,163.60, 91,745.40 and 42,501.20 is: 63,751.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,163.60 : 91,745.40 = 42,501.20 : x
  2. Step 2: Convert to fraction form
    61,163.60/91,745.40 = 42,501.20/x
  3. Step 3: Cross multiply
    61,163.60x = 91,745.40 × 42,501.20
  4. Step 4: Simplify right side
    61,163.60x = 3,899,289,594.48
  5. Step 5: Solve for x
    x = 3,899,289,594.48/61,163.60
  6. Step 6: Final answer
    x = 63,751.80

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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.