Home / 81,073.61-111,849.36-54,173.51

Finding the Fourth Proportional to 81,073.61, 111,849.36 and 54,173.51

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Solution

The fourth proportional to 81,073.61, 111,849.36 and 54,173.51 is: 74,737.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,073.61 : 111,849.36 = 54,173.51 : x
  2. Step 2: Convert to fraction form
    81,073.61/111,849.36 = 54,173.51/x
  3. Step 3: Cross multiply
    81,073.61x = 111,849.36 × 54,173.51
  4. Step 4: Simplify right side
    81,073.61x = 6,059,271,863.21
  5. Step 5: Solve for x
    x = 6,059,271,863.21/81,073.61
  6. Step 6: Final answer
    x = 74,737.91

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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.