Home / 51,619.80-77,429.70-31,920.60

Finding the Fourth Proportional to 51,619.80, 77,429.70 and 31,920.60

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Solution

The fourth proportional to 51,619.80, 77,429.70 and 31,920.60 is: 47,880.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,619.80 : 77,429.70 = 31,920.60 : x
  2. Step 2: Convert to fraction form
    51,619.80/77,429.70 = 31,920.60/x
  3. Step 3: Cross multiply
    51,619.80x = 77,429.70 × 31,920.60
  4. Step 4: Simplify right side
    51,619.80x = 2,471,602,481.82
  5. Step 5: Solve for x
    x = 2,471,602,481.82/51,619.80
  6. Step 6: Final answer
    x = 47,880.90

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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.