Home / 77,090.18-115,619.36-29,689

Finding the Fourth Proportional to 77,090.18, 115,619.36 and 29,689

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Solution

The fourth proportional to 77,090.18, 115,619.36 and 29,689 is: 44,527.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,090.18 : 115,619.36 = 29,689 : x
  2. Step 2: Convert to fraction form
    77,090.18/115,619.36 = 29,689/x
  3. Step 3: Cross multiply
    77,090.18x = 115,619.36 × 29,689
  4. Step 4: Simplify right side
    77,090.18x = 3,432,623,179.04
  5. Step 5: Solve for x
    x = 3,432,623,179.04/77,090.18
  6. Step 6: Final answer
    x = 44,527.37

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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.