Home / 81,156.73-111,994.19-45,347.03

Finding the Fourth Proportional to 81,156.73, 111,994.19 and 45,347.03

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Solution

The fourth proportional to 81,156.73, 111,994.19 and 45,347.03 is: 62,577.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,156.73 : 111,994.19 = 45,347.03 : x
  2. Step 2: Convert to fraction form
    81,156.73/111,994.19 = 45,347.03/x
  3. Step 3: Cross multiply
    81,156.73x = 111,994.19 × 45,347.03
  4. Step 4: Simplify right side
    81,156.73x = 5,078,604,267.14
  5. Step 5: Solve for x
    x = 5,078,604,267.14/81,156.73
  6. Step 6: Final answer
    x = 62,577.74

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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.