Home / 39,756.19-54,807.07-31,618.50

Finding the Fourth Proportional to 39,756.19, 54,807.07 and 31,618.50

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Solution

The fourth proportional to 39,756.19, 54,807.07 and 31,618.50 is: 43,588.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,756.19 : 54,807.07 = 31,618.50 : x
  2. Step 2: Convert to fraction form
    39,756.19/54,807.07 = 31,618.50/x
  3. Step 3: Cross multiply
    39,756.19x = 54,807.07 × 31,618.50
  4. Step 4: Simplify right side
    39,756.19x = 1,732,917,342.80
  5. Step 5: Solve for x
    x = 1,732,917,342.80/39,756.19
  6. Step 6: Final answer
    x = 43,588.62

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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.