Home / 68,923.51-103,239.95-31,515.03

Finding the Fourth Proportional to 68,923.51, 103,239.95 and 31,515.03

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Solution

The fourth proportional to 68,923.51, 103,239.95 and 31,515.03 is: 47,206.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,923.51 : 103,239.95 = 31,515.03 : x
  2. Step 2: Convert to fraction form
    68,923.51/103,239.95 = 31,515.03/x
  3. Step 3: Cross multiply
    68,923.51x = 103,239.95 × 31,515.03
  4. Step 4: Simplify right side
    68,923.51x = 3,253,609,963.87
  5. Step 5: Solve for x
    x = 3,253,609,963.87/68,923.51
  6. Step 6: Final answer
    x = 47,206.10

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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.