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Finding the Fourth Proportional to 79,969.16, 110,355.36 and 51,259.32

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Solution

The fourth proportional to 79,969.16, 110,355.36 and 51,259.32 is: 70,736.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,969.16 : 110,355.36 = 51,259.32 : x
  2. Step 2: Convert to fraction form
    79,969.16/110,355.36 = 51,259.32/x
  3. Step 3: Cross multiply
    79,969.16x = 110,355.36 × 51,259.32
  4. Step 4: Simplify right side
    79,969.16x = 5,656,740,711.96
  5. Step 5: Solve for x
    x = 5,656,740,711.96/79,969.16
  6. Step 6: Final answer
    x = 70,736.53

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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.