Home / 78,016.68-116,955.18-28,085.04

Finding the Fourth Proportional to 78,016.68, 116,955.18 and 28,085.04

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Solution

The fourth proportional to 78,016.68, 116,955.18 and 28,085.04 is: 42,102.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,016.68 : 116,955.18 = 28,085.04 : x
  2. Step 2: Convert to fraction form
    78,016.68/116,955.18 = 28,085.04/x
  3. Step 3: Cross multiply
    78,016.68x = 116,955.18 × 28,085.04
  4. Step 4: Simplify right side
    78,016.68x = 3,284,690,908.51
  5. Step 5: Solve for x
    x = 3,284,690,908.51/78,016.68
  6. Step 6: Final answer
    x = 42,102.42

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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.