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Finding the Fourth Proportional to 86,583.40, 129,850.80 and 27,437.20

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Solution

The fourth proportional to 86,583.40, 129,850.80 and 27,437.20 is: 41,148.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,583.40 : 129,850.80 = 27,437.20 : x
  2. Step 2: Convert to fraction form
    86,583.40/129,850.80 = 27,437.20/x
  3. Step 3: Cross multiply
    86,583.40x = 129,850.80 × 27,437.20
  4. Step 4: Simplify right side
    86,583.40x = 3,562,742,369.76
  5. Step 5: Solve for x
    x = 3,562,742,369.76/86,583.40
  6. Step 6: Final answer
    x = 41,148.10

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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.