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Finding the Fourth Proportional to 72,594.95, 100,181.64 and 40,766.81

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Solution

The fourth proportional to 72,594.95, 100,181.64 and 40,766.81 is: 56,258.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,594.95 : 100,181.64 = 40,766.81 : x
  2. Step 2: Convert to fraction form
    72,594.95/100,181.64 = 40,766.81/x
  3. Step 3: Cross multiply
    72,594.95x = 100,181.64 × 40,766.81
  4. Step 4: Simplify right side
    72,594.95x = 4,084,085,535.34
  5. Step 5: Solve for x
    x = 4,084,085,535.34/72,594.95
  6. Step 6: Final answer
    x = 56,258.54

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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.