Home / 81,214.58-112,078.60-45,406.10

Finding the Fourth Proportional to 81,214.58, 112,078.60 and 45,406.10

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Solution

The fourth proportional to 81,214.58, 112,078.60 and 45,406.10 is: 62,661.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,214.58 : 112,078.60 = 45,406.10 : x
  2. Step 2: Convert to fraction form
    81,214.58/112,078.60 = 45,406.10/x
  3. Step 3: Cross multiply
    81,214.58x = 112,078.60 × 45,406.10
  4. Step 4: Simplify right side
    81,214.58x = 5,089,052,119.46
  5. Step 5: Solve for x
    x = 5,089,052,119.46/81,214.58
  6. Step 6: Final answer
    x = 62,661.80

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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.