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Finding the Fourth Proportional to 68,953.50, 103,367.85 and 47,903.40

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Solution

The fourth proportional to 68,953.50, 103,367.85 and 47,903.40 is: 71,811.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,953.50 : 103,367.85 = 47,903.40 : x
  2. Step 2: Convert to fraction form
    68,953.50/103,367.85 = 47,903.40/x
  3. Step 3: Cross multiply
    68,953.50x = 103,367.85 × 47,903.40
  4. Step 4: Simplify right side
    68,953.50x = 4,951,671,465.69
  5. Step 5: Solve for x
    x = 4,951,671,465.69/68,953.50
  6. Step 6: Final answer
    x = 71,811.75

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1.5x scale

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.