Home / 82,557.12-113,988-50,768.64

Finding the Fourth Proportional to 82,557.12, 113,988 and 50,768.64

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Solution

The fourth proportional to 82,557.12, 113,988 and 50,768.64 is: 70,097.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,557.12 : 113,988 = 50,768.64 : x
  2. Step 2: Convert to fraction form
    82,557.12/113,988 = 50,768.64/x
  3. Step 3: Cross multiply
    82,557.12x = 113,988 × 50,768.64
  4. Step 4: Simplify right side
    82,557.12x = 5,787,015,736.32
  5. Step 5: Solve for x
    x = 5,787,015,736.32/82,557.12
  6. Step 6: Final answer
    x = 70,097.11

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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.