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Finding the Fourth Proportional to 86,993.78, 130,453.76 and 30,848.03

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Solution

The fourth proportional to 86,993.78, 130,453.76 and 30,848.03 is: 46,258.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,993.78 : 130,453.76 = 30,848.03 : x
  2. Step 2: Convert to fraction form
    86,993.78/130,453.76 = 30,848.03/x
  3. Step 3: Cross multiply
    86,993.78x = 130,453.76 × 30,848.03
  4. Step 4: Simplify right side
    86,993.78x = 4,024,240,695.58
  5. Step 5: Solve for x
    x = 4,024,240,695.58/86,993.78
  6. Step 6: Final answer
    x = 46,258.95

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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.