Home / 81,531.03-112,465.04-51,268.35

Finding the Fourth Proportional to 81,531.03, 112,465.04 and 51,268.35

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Solution

The fourth proportional to 81,531.03, 112,465.04 and 51,268.35 is: 70,720.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,531.03 : 112,465.04 = 51,268.35 : x
  2. Step 2: Convert to fraction form
    81,531.03/112,465.04 = 51,268.35/x
  3. Step 3: Cross multiply
    81,531.03x = 112,465.04 × 51,268.35
  4. Step 4: Simplify right side
    81,531.03x = 5,765,896,777.14
  5. Step 5: Solve for x
    x = 5,765,896,777.14/81,531.03
  6. Step 6: Final answer
    x = 70,720.27

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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.