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Finding the Fourth Proportional to 86,954.40, 130,474.80 and 34,365.60

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Solution

The fourth proportional to 86,954.40, 130,474.80 and 34,365.60 is: 51,565.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,954.40 : 130,474.80 = 34,365.60 : x
  2. Step 2: Convert to fraction form
    86,954.40/130,474.80 = 34,365.60/x
  3. Step 3: Cross multiply
    86,954.40x = 130,474.80 × 34,365.60
  4. Step 4: Simplify right side
    86,954.40x = 4,483,844,786.88
  5. Step 5: Solve for x
    x = 4,483,844,786.88/86,954.40
  6. Step 6: Final answer
    x = 51,565.47

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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.