Home / 79,880.16-110,185.76-51,190.16

Finding the Fourth Proportional to 79,880.16, 110,185.76 and 51,190.16

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Solution

The fourth proportional to 79,880.16, 110,185.76 and 51,190.16 is: 70,611.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,880.16 : 110,185.76 = 51,190.16 : x
  2. Step 2: Convert to fraction form
    79,880.16/110,185.76 = 51,190.16/x
  3. Step 3: Cross multiply
    79,880.16x = 110,185.76 × 51,190.16
  4. Step 4: Simplify right side
    79,880.16x = 5,640,426,684.12
  5. Step 5: Solve for x
    x = 5,640,426,684.12/79,880.16
  6. Step 6: Final answer
    x = 70,611.11

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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.