Home / 78,788.16-108,725.76-45,256.32

Finding the Fourth Proportional to 78,788.16, 108,725.76 and 45,256.32

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Solution

The fourth proportional to 78,788.16, 108,725.76 and 45,256.32 is: 62,452.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,788.16 : 108,725.76 = 45,256.32 : x
  2. Step 2: Convert to fraction form
    78,788.16/108,725.76 = 45,256.32/x
  3. Step 3: Cross multiply
    78,788.16x = 108,725.76 × 45,256.32
  4. Step 4: Simplify right side
    78,788.16x = 4,920,527,786.80
  5. Step 5: Solve for x
    x = 4,920,527,786.80/78,788.16
  6. Step 6: Final answer
    x = 62,452.63

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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.