Home / 77,575.77-116,361.33-21,419.31

Finding the Fourth Proportional to 77,575.77, 116,361.33 and 21,419.31

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Solution

The fourth proportional to 77,575.77, 116,361.33 and 21,419.31 is: 32,128.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,575.77 : 116,361.33 = 21,419.31 : x
  2. Step 2: Convert to fraction form
    77,575.77/116,361.33 = 21,419.31/x
  3. Step 3: Cross multiply
    77,575.77x = 116,361.33 × 21,419.31
  4. Step 4: Simplify right side
    77,575.77x = 2,492,379,399.28
  5. Step 5: Solve for x
    x = 2,492,379,399.28/77,575.77
  6. Step 6: Final answer
    x = 32,128.32

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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.