Home / 30,285.19-45,424.59-8,100.81

Finding the Fourth Proportional to 30,285.19, 45,424.59 and 8,100.81

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Solution

The fourth proportional to 30,285.19, 45,424.59 and 8,100.81 is: 12,150.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,285.19 : 45,424.59 = 8,100.81 : x
  2. Step 2: Convert to fraction form
    30,285.19/45,424.59 = 8,100.81/x
  3. Step 3: Cross multiply
    30,285.19x = 45,424.59 × 8,100.81
  4. Step 4: Simplify right side
    30,285.19x = 367,975,745.79
  5. Step 5: Solve for x
    x = 367,975,745.79/30,285.19
  6. Step 6: Final answer
    x = 12,150.35

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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.