Home / 91,724.10-126,525.49-57,678.58

Finding the Fourth Proportional to 91,724.10, 126,525.49 and 57,678.58

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Solution

The fourth proportional to 91,724.10, 126,525.49 and 57,678.58 is: 79,562.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,724.10 : 126,525.49 = 57,678.58 : x
  2. Step 2: Convert to fraction form
    91,724.10/126,525.49 = 57,678.58/x
  3. Step 3: Cross multiply
    91,724.10x = 126,525.49 × 57,678.58
  4. Step 4: Simplify right side
    91,724.10x = 7,297,810,935.41
  5. Step 5: Solve for x
    x = 7,297,810,935.41/91,724.10
  6. Step 6: Final answer
    x = 79,562.64

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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.