Home / 82,553,662.72-123,830,104.32-21,142,704.64

Finding the Fourth Proportional to 82,553,662.72, 123,830,104.32 and 21,142,704.64

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Solution

The fourth proportional to 82,553,662.72, 123,830,104.32 and 21,142,704.64 is: 31,713,957.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,553,662.72 : 123,830,104.32 = 21,142,704.64 : x
  2. Step 2: Convert to fraction form
    82,553,662.72/123,830,104.32 = 21,142,704.64/x
  3. Step 3: Cross multiply
    82,553,662.72x = 123,830,104.32 × 21,142,704.64
  4. Step 4: Simplify right side
    82,553,662.72x = 2,618,103,321,178,148
  5. Step 5: Solve for x
    x = 2,618,103,321,178,148/82,553,662.72
  6. Step 6: Final answer
    x = 31,713,957.14

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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.