Home / 69,909.36-104,879.40-51,385.20

Finding the Fourth Proportional to 69,909.36, 104,879.40 and 51,385.20

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Solution

The fourth proportional to 69,909.36, 104,879.40 and 51,385.20 is: 77,089.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,909.36 : 104,879.40 = 51,385.20 : x
  2. Step 2: Convert to fraction form
    69,909.36/104,879.40 = 51,385.20/x
  3. Step 3: Cross multiply
    69,909.36x = 104,879.40 × 51,385.20
  4. Step 4: Simplify right side
    69,909.36x = 5,389,248,944.88
  5. Step 5: Solve for x
    x = 5,389,248,944.88/69,909.36
  6. Step 6: Final answer
    x = 77,089.09

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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.