Home / 90,342.78-124,668.84-49,506.67

Finding the Fourth Proportional to 90,342.78, 124,668.84 and 49,506.67

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Solution

The fourth proportional to 90,342.78, 124,668.84 and 49,506.67 is: 68,316.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,342.78 : 124,668.84 = 49,506.67 : x
  2. Step 2: Convert to fraction form
    90,342.78/124,668.84 = 49,506.67/x
  3. Step 3: Cross multiply
    90,342.78x = 124,668.84 × 49,506.67
  4. Step 4: Simplify right side
    90,342.78x = 6,171,939,121.16
  5. Step 5: Solve for x
    x = 6,171,939,121.16/90,342.78
  6. Step 6: Final answer
    x = 68,316.91

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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.