Home / 79,077.51-109,128.33-43,270.65

Finding the Fourth Proportional to 79,077.51, 109,128.33 and 43,270.65

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Solution

The fourth proportional to 79,077.51, 109,128.33 and 43,270.65 is: 59,714.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,077.51 : 109,128.33 = 43,270.65 : x
  2. Step 2: Convert to fraction form
    79,077.51/109,128.33 = 43,270.65/x
  3. Step 3: Cross multiply
    79,077.51x = 109,128.33 × 43,270.65
  4. Step 4: Simplify right side
    79,077.51x = 4,722,053,772.51
  5. Step 5: Solve for x
    x = 4,722,053,772.51/79,077.51
  6. Step 6: Final answer
    x = 59,714.24

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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.