Home / 86,257.49-129,398.39-30,089.41

Finding the Fourth Proportional to 86,257.49, 129,398.39 and 30,089.41

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Solution

The fourth proportional to 86,257.49, 129,398.39 and 30,089.41 is: 45,138.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,257.49 : 129,398.39 = 30,089.41 : x
  2. Step 2: Convert to fraction form
    86,257.49/129,398.39 = 30,089.41/x
  3. Step 3: Cross multiply
    86,257.49x = 129,398.39 × 30,089.41
  4. Step 4: Simplify right side
    86,257.49x = 3,893,520,736.11
  5. Step 5: Solve for x
    x = 3,893,520,736.11/86,257.49
  6. Step 6: Final answer
    x = 45,138.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.