Home / 69,679.36-104,518.56-28,125.76

Finding the Fourth Proportional to 69,679.36, 104,518.56 and 28,125.76

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Solution

The fourth proportional to 69,679.36, 104,518.56 and 28,125.76 is: 42,188.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,679.36 : 104,518.56 = 28,125.76 : x
  2. Step 2: Convert to fraction form
    69,679.36/104,518.56 = 28,125.76/x
  3. Step 3: Cross multiply
    69,679.36x = 104,518.56 × 28,125.76
  4. Step 4: Simplify right side
    69,679.36x = 2,939,663,934.11
  5. Step 5: Solve for x
    x = 2,939,663,934.11/69,679.36
  6. Step 6: Final answer
    x = 42,188.45

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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.