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Finding the Fourth Proportional to 72,916.67, 100,625.05 and 39,382.67

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Solution

The fourth proportional to 72,916.67, 100,625.05 and 39,382.67 is: 54,348.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,916.67 : 100,625.05 = 39,382.67 : x
  2. Step 2: Convert to fraction form
    72,916.67/100,625.05 = 39,382.67/x
  3. Step 3: Cross multiply
    72,916.67x = 100,625.05 × 39,382.67
  4. Step 4: Simplify right side
    72,916.67x = 3,962,883,438.67
  5. Step 5: Solve for x
    x = 3,962,883,438.67/72,916.67
  6. Step 6: Final answer
    x = 54,348.11

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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.