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Finding the Fourth Proportional to 40,477.90, 60,721.26 and 15,539.14

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Solution

The fourth proportional to 40,477.90, 60,721.26 and 15,539.14 is: 23,310.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,477.90 : 60,721.26 = 15,539.14 : x
  2. Step 2: Convert to fraction form
    40,477.90/60,721.26 = 15,539.14/x
  3. Step 3: Cross multiply
    40,477.90x = 60,721.26 × 15,539.14
  4. Step 4: Simplify right side
    40,477.90x = 943,556,160.12
  5. Step 5: Solve for x
    x = 943,556,160.12/40,477.90
  6. Step 6: Final answer
    x = 23,310.40

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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.