Home / 86,045.51-118,701.42-55,840.31

Finding the Fourth Proportional to 86,045.51, 118,701.42 and 55,840.31

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Solution

The fourth proportional to 86,045.51, 118,701.42 and 55,840.31 is: 77,032.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,045.51 : 118,701.42 = 55,840.31 : x
  2. Step 2: Convert to fraction form
    86,045.51/118,701.42 = 55,840.31/x
  3. Step 3: Cross multiply
    86,045.51x = 118,701.42 × 55,840.31
  4. Step 4: Simplify right side
    86,045.51x = 6,628,324,090.24
  5. Step 5: Solve for x
    x = 6,628,324,090.24/86,045.51
  6. Step 6: Final answer
    x = 77,032.77

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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.