Home / 81,410.09-121,904.82-56,187.44

Finding the Fourth Proportional to 81,410.09, 121,904.82 and 56,187.44

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Solution

The fourth proportional to 81,410.09, 121,904.82 and 56,187.44 is: 84,136.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,410.09 : 121,904.82 = 56,187.44 : x
  2. Step 2: Convert to fraction form
    81,410.09/121,904.82 = 56,187.44/x
  3. Step 3: Cross multiply
    81,410.09x = 121,904.82 × 56,187.44
  4. Step 4: Simplify right side
    81,410.09x = 6,849,519,149.94
  5. Step 5: Solve for x
    x = 6,849,519,149.94/81,410.09
  6. Step 6: Final answer
    x = 84,136.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.