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Finding the Fourth Proportional to 72,725.41, 100,246.70 and 66,623.68

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Solution

The fourth proportional to 72,725.41, 100,246.70 and 66,623.68 is: 91,835.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,725.41 : 100,246.70 = 66,623.68 : x
  2. Step 2: Convert to fraction form
    72,725.41/100,246.70 = 66,623.68/x
  3. Step 3: Cross multiply
    72,725.41x = 100,246.70 × 66,623.68
  4. Step 4: Simplify right side
    72,725.41x = 6,678,803,227.50
  5. Step 5: Solve for x
    x = 6,678,803,227.50/72,725.41
  6. Step 6: Final answer
    x = 91,835.90

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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.