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Finding the Fourth Proportional to 68,494.83, 94,511.32 and 38,280.40

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Solution

The fourth proportional to 68,494.83, 94,511.32 and 38,280.40 is: 52,820.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,494.83 : 94,511.32 = 38,280.40 : x
  2. Step 2: Convert to fraction form
    68,494.83/94,511.32 = 38,280.40/x
  3. Step 3: Cross multiply
    68,494.83x = 94,511.32 × 38,280.40
  4. Step 4: Simplify right side
    68,494.83x = 3,617,930,855.98
  5. Step 5: Solve for x
    x = 3,617,930,855.98/68,494.83
  6. Step 6: Final answer
    x = 52,820.50

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1.5x scale

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.