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Finding the Fourth Proportional to 78,676.74, 118,608.26 and 73,602.90

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Solution

The fourth proportional to 78,676.74, 118,608.26 and 73,602.90 is: 110,959.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,676.74 : 118,608.26 = 73,602.90 : x
  2. Step 2: Convert to fraction form
    78,676.74/118,608.26 = 73,602.90/x
  3. Step 3: Cross multiply
    78,676.74x = 118,608.26 × 73,602.90
  4. Step 4: Simplify right side
    78,676.74x = 8,729,911,899.95
  5. Step 5: Solve for x
    x = 8,729,911,899.95/78,676.74
  6. Step 6: Final answer
    x = 110,959.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.