Home / 85,768.25-118,212.41-57,036.55

Finding the Fourth Proportional to 85,768.25, 118,212.41 and 57,036.55

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Solution

The fourth proportional to 85,768.25, 118,212.41 and 57,036.55 is: 78,612.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,768.25 : 118,212.41 = 57,036.55 : x
  2. Step 2: Convert to fraction form
    85,768.25/118,212.41 = 57,036.55/x
  3. Step 3: Cross multiply
    85,768.25x = 118,212.41 × 57,036.55
  4. Step 4: Simplify right side
    85,768.25x = 6,742,428,003.11
  5. Step 5: Solve for x
    x = 6,742,428,003.11/85,768.25
  6. Step 6: Final answer
    x = 78,612.17

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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.