Home / 81,001.16-111,783.80-50,783.64

Finding the Fourth Proportional to 81,001.16, 111,783.80 and 50,783.64

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Solution

The fourth proportional to 81,001.16, 111,783.80 and 50,783.64 is: 70,082.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,001.16 : 111,783.80 = 50,783.64 : x
  2. Step 2: Convert to fraction form
    81,001.16/111,783.80 = 50,783.64/x
  3. Step 3: Cross multiply
    81,001.16x = 111,783.80 × 50,783.64
  4. Step 4: Simplify right side
    81,001.16x = 5,676,788,257.03
  5. Step 5: Solve for x
    x = 5,676,788,257.03/81,001.16
  6. Step 6: Final answer
    x = 70,082.80

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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.