Home / 69,903.12-104,858.52-20,658.96

Finding the Fourth Proportional to 69,903.12, 104,858.52 and 20,658.96

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Solution

The fourth proportional to 69,903.12, 104,858.52 and 20,658.96 is: 30,989.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,903.12 : 104,858.52 = 20,658.96 : x
  2. Step 2: Convert to fraction form
    69,903.12/104,858.52 = 20,658.96/x
  3. Step 3: Cross multiply
    69,903.12x = 104,858.52 × 20,658.96
  4. Step 4: Simplify right side
    69,903.12x = 2,166,267,970.34
  5. Step 5: Solve for x
    x = 2,166,267,970.34/69,903.12
  6. Step 6: Final answer
    x = 30,989.57

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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.