Home / 82,947.93-124,421.81-20,618.43

Finding the Fourth Proportional to 82,947.93, 124,421.81 and 20,618.43

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Solution

The fourth proportional to 82,947.93, 124,421.81 and 20,618.43 is: 30,927.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,947.93 : 124,421.81 = 20,618.43 : x
  2. Step 2: Convert to fraction form
    82,947.93/124,421.81 = 20,618.43/x
  3. Step 3: Cross multiply
    82,947.93x = 124,421.81 × 20,618.43
  4. Step 4: Simplify right side
    82,947.93x = 2,565,382,276.87
  5. Step 5: Solve for x
    x = 2,565,382,276.87/82,947.93
  6. Step 6: Final answer
    x = 30,927.62

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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.