Home / 54,089.94-74,639.09-31,428.69

Finding the Fourth Proportional to 54,089.94, 74,639.09 and 31,428.69

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Solution

The fourth proportional to 54,089.94, 74,639.09 and 31,428.69 is: 43,368.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,089.94 : 74,639.09 = 31,428.69 : x
  2. Step 2: Convert to fraction form
    54,089.94/74,639.09 = 31,428.69/x
  3. Step 3: Cross multiply
    54,089.94x = 74,639.09 × 31,428.69
  4. Step 4: Simplify right side
    54,089.94x = 2,345,808,664.35
  5. Step 5: Solve for x
    x = 2,345,808,664.35/54,089.94
  6. Step 6: Final answer
    x = 43,368.67

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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.