Home / 79,079.51-109,131.09-43,272.65

Finding the Fourth Proportional to 79,079.51, 109,131.09 and 43,272.65

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Solution

The fourth proportional to 79,079.51, 109,131.09 and 43,272.65 is: 59,717.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,079.51 : 109,131.09 = 43,272.65 : x
  2. Step 2: Convert to fraction form
    79,079.51/109,131.09 = 43,272.65/x
  3. Step 3: Cross multiply
    79,079.51x = 109,131.09 × 43,272.65
  4. Step 4: Simplify right side
    79,079.51x = 4,722,391,461.69
  5. Step 5: Solve for x
    x = 4,722,391,461.69/79,079.51
  6. Step 6: Final answer
    x = 59,717.00

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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.