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Finding the Fourth Proportional to 86,701.60, 130,050.58 and 39,954.48

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Solution

The fourth proportional to 86,701.60, 130,050.58 and 39,954.48 is: 59,930.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,701.60 : 130,050.58 = 39,954.48 : x
  2. Step 2: Convert to fraction form
    86,701.60/130,050.58 = 39,954.48/x
  3. Step 3: Cross multiply
    86,701.60x = 130,050.58 × 39,954.48
  4. Step 4: Simplify right side
    86,701.60x = 5,196,103,297.60
  5. Step 5: Solve for x
    x = 5,196,103,297.60/86,701.60
  6. Step 6: Final answer
    x = 59,930.88

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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.