Home / 49,890,615.80-74,863,917.30-21,131,857.40

Finding the Fourth Proportional to 49,890,615.80, 74,863,917.30 and 21,131,857.40

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Solution

The fourth proportional to 49,890,615.80, 74,863,917.30 and 21,131,857.40 is: 31,709,643.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,890,615.80 : 74,863,917.30 = 21,131,857.40 : x
  2. Step 2: Convert to fraction form
    49,890,615.80/74,863,917.30 = 21,131,857.40/x
  3. Step 3: Cross multiply
    49,890,615.80x = 74,863,917.30 × 21,131,857.40
  4. Step 4: Simplify right side
    49,890,615.80x = 1,582,013,624,788,992.75
  5. Step 5: Solve for x
    x = 1,582,013,624,788,992.75/49,890,615.80
  6. Step 6: Final answer
    x = 31,709,643.17

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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.