Home / 68,820.51-103,274.61-31,384.32

Finding the Fourth Proportional to 68,820.51, 103,274.61 and 31,384.32

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Solution

The fourth proportional to 68,820.51, 103,274.61 and 31,384.32 is: 47,096.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,820.51 : 103,274.61 = 31,384.32 : x
  2. Step 2: Convert to fraction form
    68,820.51/103,274.61 = 31,384.32/x
  3. Step 3: Cross multiply
    68,820.51x = 103,274.61 × 31,384.32
  4. Step 4: Simplify right side
    68,820.51x = 3,241,203,408.12
  5. Step 5: Solve for x
    x = 3,241,203,408.12/68,820.51
  6. Step 6: Final answer
    x = 47,096.47

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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.