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Finding the Fourth Proportional to 79,077.55, 118,485.10 and 55,654.78

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Solution

The fourth proportional to 79,077.55, 118,485.10 and 55,654.78 is: 83,389.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,077.55 : 118,485.10 = 55,654.78 : x
  2. Step 2: Convert to fraction form
    79,077.55/118,485.10 = 55,654.78/x
  3. Step 3: Cross multiply
    79,077.55x = 118,485.10 × 55,654.78
  4. Step 4: Simplify right side
    79,077.55x = 6,594,261,738.43
  5. Step 5: Solve for x
    x = 6,594,261,738.43/79,077.55
  6. Step 6: Final answer
    x = 83,389.81

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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.