Home / 69,695.36-104,542.40-28,141.76

Finding the Fourth Proportional to 69,695.36, 104,542.40 and 28,141.76

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Solution

The fourth proportional to 69,695.36, 104,542.40 and 28,141.76 is: 42,212.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,695.36 : 104,542.40 = 28,141.76 : x
  2. Step 2: Convert to fraction form
    69,695.36/104,542.40 = 28,141.76/x
  3. Step 3: Cross multiply
    69,695.36x = 104,542.40 × 28,141.76
  4. Step 4: Simplify right side
    69,695.36x = 2,942,007,130.62
  5. Step 5: Solve for x
    x = 2,942,007,130.62/69,695.36
  6. Step 6: Final answer
    x = 42,212.38

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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.