Home / 69,920.16-104,825.34-47,678.28

Finding the Fourth Proportional to 69,920.16, 104,825.34 and 47,678.28

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Solution

The fourth proportional to 69,920.16, 104,825.34 and 47,678.28 is: 71,479.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,920.16 : 104,825.34 = 47,678.28 : x
  2. Step 2: Convert to fraction form
    69,920.16/104,825.34 = 47,678.28/x
  3. Step 3: Cross multiply
    69,920.16x = 104,825.34 × 47,678.28
  4. Step 4: Simplify right side
    69,920.16x = 4,997,891,911.62
  5. Step 5: Solve for x
    x = 4,997,891,911.62/69,920.16
  6. Step 6: Final answer
    x = 71,479.98

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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.