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Finding the Fourth Proportional to 72,289.46, 108,438.45 and 27,916.45

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Solution

The fourth proportional to 72,289.46, 108,438.45 and 27,916.45 is: 41,876.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,289.46 : 108,438.45 = 27,916.45 : x
  2. Step 2: Convert to fraction form
    72,289.46/108,438.45 = 27,916.45/x
  3. Step 3: Cross multiply
    72,289.46x = 108,438.45 × 27,916.45
  4. Step 4: Simplify right side
    72,289.46x = 3,027,216,191.72
  5. Step 5: Solve for x
    x = 3,027,216,191.72/72,289.46
  6. Step 6: Final answer
    x = 41,876.31

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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.