Home / 52,278.43-72,144.12-28,405.20

Finding the Fourth Proportional to 52,278.43, 72,144.12 and 28,405.20

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Solution

The fourth proportional to 52,278.43, 72,144.12 and 28,405.20 is: 39,199.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,278.43 : 72,144.12 = 28,405.20 : x
  2. Step 2: Convert to fraction form
    52,278.43/72,144.12 = 28,405.20/x
  3. Step 3: Cross multiply
    52,278.43x = 72,144.12 × 28,405.20
  4. Step 4: Simplify right side
    52,278.43x = 2,049,268,015.40
  5. Step 5: Solve for x
    x = 2,049,268,015.40/52,278.43
  6. Step 6: Final answer
    x = 39,199.11

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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.