Home / 84,074.40-115,911.09-69,680.25

Finding the Fourth Proportional to 84,074.40, 115,911.09 and 69,680.25

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Solution

The fourth proportional to 84,074.40, 115,911.09 and 69,680.25 is: 96,066.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,074.40 : 115,911.09 = 69,680.25 : x
  2. Step 2: Convert to fraction form
    84,074.40/115,911.09 = 69,680.25/x
  3. Step 3: Cross multiply
    84,074.40x = 115,911.09 × 69,680.25
  4. Step 4: Simplify right side
    84,074.40x = 8,076,713,728.97
  5. Step 5: Solve for x
    x = 8,076,713,728.97/84,074.40
  6. Step 6: Final answer
    x = 96,066.27

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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.