Home / 82,012.08-122,934.26-28,688.16

Finding the Fourth Proportional to 82,012.08, 122,934.26 and 28,688.16

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Solution

The fourth proportional to 82,012.08, 122,934.26 and 28,688.16 is: 43,002.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,012.08 : 122,934.26 = 28,688.16 : x
  2. Step 2: Convert to fraction form
    82,012.08/122,934.26 = 28,688.16/x
  3. Step 3: Cross multiply
    82,012.08x = 122,934.26 × 28,688.16
  4. Step 4: Simplify right side
    82,012.08x = 3,526,757,720.36
  5. Step 5: Solve for x
    x = 3,526,757,720.36/82,012.08
  6. Step 6: Final answer
    x = 43,002.91

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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.