Home / 68,435.64-102,685.95-47,408.04

Finding the Fourth Proportional to 68,435.64, 102,685.95 and 47,408.04

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Solution

The fourth proportional to 68,435.64, 102,685.95 and 47,408.04 is: 71,134.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,435.64 : 102,685.95 = 47,408.04 : x
  2. Step 2: Convert to fraction form
    68,435.64/102,685.95 = 47,408.04/x
  3. Step 3: Cross multiply
    68,435.64x = 102,685.95 × 47,408.04
  4. Step 4: Simplify right side
    68,435.64x = 4,868,139,625.04
  5. Step 5: Solve for x
    x = 4,868,139,625.04/68,435.64
  6. Step 6: Final answer
    x = 71,134.57

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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.