Home / 79,315.02-109,479.21-51,020.70

Finding the Fourth Proportional to 79,315.02, 109,479.21 and 51,020.70

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Solution

The fourth proportional to 79,315.02, 109,479.21 and 51,020.70 is: 70,424.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,315.02 : 109,479.21 = 51,020.70 : x
  2. Step 2: Convert to fraction form
    79,315.02/109,479.21 = 51,020.70/x
  3. Step 3: Cross multiply
    79,315.02x = 109,479.21 × 51,020.70
  4. Step 4: Simplify right side
    79,315.02x = 5,585,705,929.65
  5. Step 5: Solve for x
    x = 5,585,705,929.65/79,315.02
  6. Step 6: Final answer
    x = 70,424.31

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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.