Home / 81,218.08-112,083.42-45,409.60

Finding the Fourth Proportional to 81,218.08, 112,083.42 and 45,409.60

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Solution

The fourth proportional to 81,218.08, 112,083.42 and 45,409.60 is: 62,666.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,218.08 : 112,083.42 = 45,409.60 : x
  2. Step 2: Convert to fraction form
    81,218.08/112,083.42 = 45,409.60/x
  3. Step 3: Cross multiply
    81,218.08x = 112,083.42 × 45,409.60
  4. Step 4: Simplify right side
    81,218.08x = 5,089,663,268.83
  5. Step 5: Solve for x
    x = 5,089,663,268.83/81,218.08
  6. Step 6: Final answer
    x = 62,666.63

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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.