Home / 91,799.83-126,612.34-66,401.47

Finding the Fourth Proportional to 91,799.83, 126,612.34 and 66,401.47

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Solution

The fourth proportional to 91,799.83, 126,612.34 and 66,401.47 is: 91,582.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,799.83 : 126,612.34 = 66,401.47 : x
  2. Step 2: Convert to fraction form
    91,799.83/126,612.34 = 66,401.47/x
  3. Step 3: Cross multiply
    91,799.83x = 126,612.34 × 66,401.47
  4. Step 4: Simplify right side
    91,799.83x = 8,407,245,496.14
  5. Step 5: Solve for x
    x = 8,407,245,496.14/91,799.83
  6. Step 6: Final answer
    x = 91,582.36

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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.