Home / 86,205.93-129,368.36-30,046.51

Finding the Fourth Proportional to 86,205.93, 129,368.36 and 30,046.51

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Solution

The fourth proportional to 86,205.93, 129,368.36 and 30,046.51 is: 45,090.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,205.93 : 129,368.36 = 30,046.51 : x
  2. Step 2: Convert to fraction form
    86,205.93/129,368.36 = 30,046.51/x
  3. Step 3: Cross multiply
    86,205.93x = 129,368.36 × 30,046.51
  4. Step 4: Simplify right side
    86,205.93x = 3,887,067,722.42
  5. Step 5: Solve for x
    x = 3,887,067,722.42/86,205.93
  6. Step 6: Final answer
    x = 45,090.49

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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.