Home / 66,454,369.76-99,680,890.32-21,016,172

Finding the Fourth Proportional to 66,454,369.76, 99,680,890.32 and 21,016,172

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Solution

The fourth proportional to 66,454,369.76, 99,680,890.32 and 21,016,172 is: 31,524,047.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,454,369.76 : 99,680,890.32 = 21,016,172 : x
  2. Step 2: Convert to fraction form
    66,454,369.76/99,680,890.32 = 21,016,172/x
  3. Step 3: Cross multiply
    66,454,369.76x = 99,680,890.32 × 21,016,172
  4. Step 4: Simplify right side
    66,454,369.76x = 2,094,910,736,078,255
  5. Step 5: Solve for x
    x = 2,094,910,736,078,255/66,454,369.76
  6. Step 6: Final answer
    x = 31,524,047.91

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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.