Home / 69,680,919.64-104,514,621.78-21,159,193.72

Finding the Fourth Proportional to 69,680,919.64, 104,514,621.78 and 21,159,193.72

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Solution

The fourth proportional to 69,680,919.64, 104,514,621.78 and 21,159,193.72 is: 31,736,738.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,680,919.64 : 104,514,621.78 = 21,159,193.72 : x
  2. Step 2: Convert to fraction form
    69,680,919.64/104,514,621.78 = 21,159,193.72/x
  3. Step 3: Cross multiply
    69,680,919.64x = 104,514,621.78 × 21,159,193.72
  4. Step 4: Simplify right side
    69,680,919.64x = 2,211,445,128,815,551
  5. Step 5: Solve for x
    x = 2,211,445,128,815,551/69,680,919.64
  6. Step 6: Final answer
    x = 31,736,738.55

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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.