Home / 86,988.33-120,102.36-54,332.49

Finding the Fourth Proportional to 86,988.33, 120,102.36 and 54,332.49

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Solution

The fourth proportional to 86,988.33, 120,102.36 and 54,332.49 is: 75,015.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,988.33 : 120,102.36 = 54,332.49 : x
  2. Step 2: Convert to fraction form
    86,988.33/120,102.36 = 54,332.49/x
  3. Step 3: Cross multiply
    86,988.33x = 120,102.36 × 54,332.49
  4. Step 4: Simplify right side
    86,988.33x = 6,525,460,273.68
  5. Step 5: Solve for x
    x = 6,525,460,273.68/86,988.33
  6. Step 6: Final answer
    x = 75,015.35

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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.