Home / 81,172.45-121,770.11-25,017.10

Finding the Fourth Proportional to 81,172.45, 121,770.11 and 25,017.10

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Solution

The fourth proportional to 81,172.45, 121,770.11 and 25,017.10 is: 37,529.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,172.45 : 121,770.11 = 25,017.10 : x
  2. Step 2: Convert to fraction form
    81,172.45/121,770.11 = 25,017.10/x
  3. Step 3: Cross multiply
    81,172.45x = 121,770.11 × 25,017.10
  4. Step 4: Simplify right side
    81,172.45x = 3,046,334,284.94
  5. Step 5: Solve for x
    x = 3,046,334,284.94/81,172.45
  6. Step 6: Final answer
    x = 37,529.17

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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.