Home / 39,312.26-54,304-31,409.90

Finding the Fourth Proportional to 39,312.26, 54,304 and 31,409.90

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Solution

The fourth proportional to 39,312.26, 54,304 and 31,409.90 is: 43,388.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,312.26 : 54,304 = 31,409.90 : x
  2. Step 2: Convert to fraction form
    39,312.26/54,304 = 31,409.90/x
  3. Step 3: Cross multiply
    39,312.26x = 54,304 × 31,409.90
  4. Step 4: Simplify right side
    39,312.26x = 1,705,683,209.60
  5. Step 5: Solve for x
    x = 1,705,683,209.60/39,312.26
  6. Step 6: Final answer
    x = 43,388.07

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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.