Home / 91,979.84-126,928.44-56,229.68

Finding the Fourth Proportional to 91,979.84, 126,928.44 and 56,229.68

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Solution

The fourth proportional to 91,979.84, 126,928.44 and 56,229.68 is: 77,594.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,979.84 : 126,928.44 = 56,229.68 : x
  2. Step 2: Convert to fraction form
    91,979.84/126,928.44 = 56,229.68/x
  3. Step 3: Cross multiply
    91,979.84x = 126,928.44 × 56,229.68
  4. Step 4: Simplify right side
    91,979.84x = 7,137,145,564.10
  5. Step 5: Solve for x
    x = 7,137,145,564.10/91,979.84
  6. Step 6: Final answer
    x = 77,594.67

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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.