Home / 39,756.69-54,807.76-31,619

Finding the Fourth Proportional to 39,756.69, 54,807.76 and 31,619

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Solution

The fourth proportional to 39,756.69, 54,807.76 and 31,619 is: 43,589.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,756.69 : 54,807.76 = 31,619 : x
  2. Step 2: Convert to fraction form
    39,756.69/54,807.76 = 31,619/x
  3. Step 3: Cross multiply
    39,756.69x = 54,807.76 × 31,619
  4. Step 4: Simplify right side
    39,756.69x = 1,732,966,563.44
  5. Step 5: Solve for x
    x = 1,732,966,563.44/39,756.69
  6. Step 6: Final answer
    x = 43,589.31

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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.