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Finding the Fourth Proportional to 72,357.08, 99,858.05 and 43,683.78

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Solution

The fourth proportional to 72,357.08, 99,858.05 and 43,683.78 is: 60,286.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,357.08 : 99,858.05 = 43,683.78 : x
  2. Step 2: Convert to fraction form
    72,357.08/99,858.05 = 43,683.78/x
  3. Step 3: Cross multiply
    72,357.08x = 99,858.05 × 43,683.78
  4. Step 4: Simplify right side
    72,357.08x = 4,362,177,407.29
  5. Step 5: Solve for x
    x = 4,362,177,407.29/72,357.08
  6. Step 6: Final answer
    x = 60,286.81

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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.