Home / 72,188.43-99,620.26-40,357.33

Finding the Fourth Proportional to 72,188.43, 99,620.26 and 40,357.33

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Solution

The fourth proportional to 72,188.43, 99,620.26 and 40,357.33 is: 55,693.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,188.43 : 99,620.26 = 40,357.33 : x
  2. Step 2: Convert to fraction form
    72,188.43/99,620.26 = 40,357.33/x
  3. Step 3: Cross multiply
    72,188.43x = 99,620.26 × 40,357.33
  4. Step 4: Simplify right side
    72,188.43x = 4,020,407,707.51
  5. Step 5: Solve for x
    x = 4,020,407,707.51/72,188.43
  6. Step 6: Final answer
    x = 55,693.24

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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.