Home / 39,720,890.69-54,839,284.29-31,494,184.01

Finding the Fourth Proportional to 39,720,890.69, 54,839,284.29 and 31,494,184.01

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Solution

The fourth proportional to 39,720,890.69, 54,839,284.29 and 31,494,184.01 is: 43,481,364.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,720,890.69 : 54,839,284.29 = 31,494,184.01 : x
  2. Step 2: Convert to fraction form
    39,720,890.69/54,839,284.29 = 31,494,184.01/x
  3. Step 3: Cross multiply
    39,720,890.69x = 54,839,284.29 × 31,494,184.01
  4. Step 4: Simplify right side
    39,720,890.69x = 1,727,118,510,131,765.75
  5. Step 5: Solve for x
    x = 1,727,118,510,131,765.75/39,720,890.69
  6. Step 6: Final answer
    x = 43,481,364.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.