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Finding the Fourth Proportional to 80,118.95, 110,559.65 and 43,813.19

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Solution

The fourth proportional to 80,118.95, 110,559.65 and 43,813.19 is: 60,459.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,118.95 : 110,559.65 = 43,813.19 : x
  2. Step 2: Convert to fraction form
    80,118.95/110,559.65 = 43,813.19/x
  3. Step 3: Cross multiply
    80,118.95x = 110,559.65 × 43,813.19
  4. Step 4: Simplify right side
    80,118.95x = 4,843,971,009.12
  5. Step 5: Solve for x
    x = 4,843,971,009.12/80,118.95
  6. Step 6: Final answer
    x = 60,459.74

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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.