Home / 81,077.12-111,917.08-63,804.68

Finding the Fourth Proportional to 81,077.12, 111,917.08 and 63,804.68

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Solution

The fourth proportional to 81,077.12, 111,917.08 and 63,804.68 is: 88,074.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,077.12 : 111,917.08 = 63,804.68 : x
  2. Step 2: Convert to fraction form
    81,077.12/111,917.08 = 63,804.68/x
  3. Step 3: Cross multiply
    81,077.12x = 111,917.08 × 63,804.68
  4. Step 4: Simplify right side
    81,077.12x = 7,140,833,475.93
  5. Step 5: Solve for x
    x = 7,140,833,475.93/81,077.12
  6. Step 6: Final answer
    x = 88,074.58

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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.