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Finding the Fourth Proportional to 72,477.64, 100,020.16 and 43,793.32

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Solution

The fourth proportional to 72,477.64, 100,020.16 and 43,793.32 is: 60,435.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,477.64 : 100,020.16 = 43,793.32 : x
  2. Step 2: Convert to fraction form
    72,477.64/100,020.16 = 43,793.32/x
  3. Step 3: Cross multiply
    72,477.64x = 100,020.16 × 43,793.32
  4. Step 4: Simplify right side
    72,477.64x = 4,380,214,873.33
  5. Step 5: Solve for x
    x = 4,380,214,873.33/72,477.64
  6. Step 6: Final answer
    x = 60,435.40

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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.