Home / 51,039.90-70,435.26-28,380.96

Finding the Fourth Proportional to 51,039.90, 70,435.26 and 28,380.96

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Solution

The fourth proportional to 51,039.90, 70,435.26 and 28,380.96 is: 39,165.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,039.90 : 70,435.26 = 28,380.96 : x
  2. Step 2: Convert to fraction form
    51,039.90/70,435.26 = 28,380.96/x
  3. Step 3: Cross multiply
    51,039.90x = 70,435.26 × 28,380.96
  4. Step 4: Simplify right side
    51,039.90x = 1,999,020,296.65
  5. Step 5: Solve for x
    x = 1,999,020,296.65/51,039.90
  6. Step 6: Final answer
    x = 39,165.83

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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.