Home / 68,681.06-103,005.41-18,749.28

Finding the Fourth Proportional to 68,681.06, 103,005.41 and 18,749.28

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Solution

The fourth proportional to 68,681.06, 103,005.41 and 18,749.28 is: 28,119.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,681.06 : 103,005.41 = 18,749.28 : x
  2. Step 2: Convert to fraction form
    68,681.06/103,005.41 = 18,749.28/x
  3. Step 3: Cross multiply
    68,681.06x = 103,005.41 × 18,749.28
  4. Step 4: Simplify right side
    68,681.06x = 1,931,277,273.60
  5. Step 5: Solve for x
    x = 1,931,277,273.60/68,681.06
  6. Step 6: Final answer
    x = 28,119.50

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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.