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Finding the Fourth Proportional to 78,819.07, 118,040.68 and 43,671.55

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Solution

The fourth proportional to 78,819.07, 118,040.68 and 43,671.55 is: 65,403.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,819.07 : 118,040.68 = 43,671.55 : x
  2. Step 2: Convert to fraction form
    78,819.07/118,040.68 = 43,671.55/x
  3. Step 3: Cross multiply
    78,819.07x = 118,040.68 × 43,671.55
  4. Step 4: Simplify right side
    78,819.07x = 5,155,019,458.65
  5. Step 5: Solve for x
    x = 5,155,019,458.65/78,819.07
  6. Step 6: Final answer
    x = 65,403.20

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1.5x scale

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.