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Finding the Fourth Proportional to 65,021.55, 97,535.69 and 20,651.77

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Solution

The fourth proportional to 65,021.55, 97,535.69 and 20,651.77 is: 30,978.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,021.55 : 97,535.69 = 20,651.77 : x
  2. Step 2: Convert to fraction form
    65,021.55/97,535.69 = 20,651.77/x
  3. Step 3: Cross multiply
    65,021.55x = 97,535.69 × 20,651.77
  4. Step 4: Simplify right side
    65,021.55x = 2,014,284,848.94
  5. Step 5: Solve for x
    x = 2,014,284,848.94/65,021.55
  6. Step 6: Final answer
    x = 30,978.73

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1.5x scale

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.