Home / 81,054.64-111,605.88-69,091.12

Finding the Fourth Proportional to 81,054.64, 111,605.88 and 69,091.12

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Solution

The fourth proportional to 81,054.64, 111,605.88 and 69,091.12 is: 95,133.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,054.64 : 111,605.88 = 69,091.12 : x
  2. Step 2: Convert to fraction form
    81,054.64/111,605.88 = 69,091.12/x
  3. Step 3: Cross multiply
    81,054.64x = 111,605.88 × 69,091.12
  4. Step 4: Simplify right side
    81,054.64x = 7,710,975,247.79
  5. Step 5: Solve for x
    x = 7,710,975,247.79/81,054.64
  6. Step 6: Final answer
    x = 95,133.05

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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.