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Finding the Fourth Proportional to 72,652.95, 108,979.29 and 20,062.29

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Solution

The fourth proportional to 72,652.95, 108,979.29 and 20,062.29 is: 30,093.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,652.95 : 108,979.29 = 20,062.29 : x
  2. Step 2: Convert to fraction form
    72,652.95/108,979.29 = 20,062.29/x
  3. Step 3: Cross multiply
    72,652.95x = 108,979.29 × 20,062.29
  4. Step 4: Simplify right side
    72,652.95x = 2,186,374,119.97
  5. Step 5: Solve for x
    x = 2,186,374,119.97/72,652.95
  6. Step 6: Final answer
    x = 30,093.40

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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.