Home / 78,790.23-118,169.45-28,853.28

Finding the Fourth Proportional to 78,790.23, 118,169.45 and 28,853.28

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Solution

The fourth proportional to 78,790.23, 118,169.45 and 28,853.28 is: 43,274.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,790.23 : 118,169.45 = 28,853.28 : x
  2. Step 2: Convert to fraction form
    78,790.23/118,169.45 = 28,853.28/x
  3. Step 3: Cross multiply
    78,790.23x = 118,169.45 × 28,853.28
  4. Step 4: Simplify right side
    78,790.23x = 3,409,576,192.23
  5. Step 5: Solve for x
    x = 3,409,576,192.23/78,790.23
  6. Step 6: Final answer
    x = 43,274.10

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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.