Home / 79,621.32-109,840.68-51,336.12

Finding the Fourth Proportional to 79,621.32, 109,840.68 and 51,336.12

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Solution

The fourth proportional to 79,621.32, 109,840.68 and 51,336.12 is: 70,820.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,621.32 : 109,840.68 = 51,336.12 : x
  2. Step 2: Convert to fraction form
    79,621.32/109,840.68 = 51,336.12/x
  3. Step 3: Cross multiply
    79,621.32x = 109,840.68 × 51,336.12
  4. Step 4: Simplify right side
    79,621.32x = 5,638,794,329.36
  5. Step 5: Solve for x
    x = 5,638,794,329.36/79,621.32
  6. Step 6: Final answer
    x = 70,820.16

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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.