Home / 81,361.51-112,265.48-51,125.40

Finding the Fourth Proportional to 81,361.51, 112,265.48 and 51,125.40

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Solution

The fourth proportional to 81,361.51, 112,265.48 and 51,125.40 is: 70,544.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,361.51 : 112,265.48 = 51,125.40 : x
  2. Step 2: Convert to fraction form
    81,361.51/112,265.48 = 51,125.40/x
  3. Step 3: Cross multiply
    81,361.51x = 112,265.48 × 51,125.40
  4. Step 4: Simplify right side
    81,361.51x = 5,739,617,699.01
  5. Step 5: Solve for x
    x = 5,739,617,699.01/81,361.51
  6. Step 6: Final answer
    x = 70,544.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.