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Finding the Fourth Proportional to 79,768.80, 110,073.60 and 45,770.40

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Solution

The fourth proportional to 79,768.80, 110,073.60 and 45,770.40 is: 63,158.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,768.80 : 110,073.60 = 45,770.40 : x
  2. Step 2: Convert to fraction form
    79,768.80/110,073.60 = 45,770.40/x
  3. Step 3: Cross multiply
    79,768.80x = 110,073.60 × 45,770.40
  4. Step 4: Simplify right side
    79,768.80x = 5,038,112,701.44
  5. Step 5: Solve for x
    x = 5,038,112,701.44/79,768.80
  6. Step 6: Final answer
    x = 63,158.94

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1.5x scale

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.