Home / 79,145.21-109,220.36-43,335.21

Finding the Fourth Proportional to 79,145.21, 109,220.36 and 43,335.21

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Solution

The fourth proportional to 79,145.21, 109,220.36 and 43,335.21 is: 59,802.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,145.21 : 109,220.36 = 43,335.21 : x
  2. Step 2: Convert to fraction form
    79,145.21/109,220.36 = 43,335.21/x
  3. Step 3: Cross multiply
    79,145.21x = 109,220.36 × 43,335.21
  4. Step 4: Simplify right side
    79,145.21x = 4,733,087,020.20
  5. Step 5: Solve for x
    x = 4,733,087,020.20/79,145.21
  6. Step 6: Final answer
    x = 59,802.57

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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.