Home / 52,278.40-72,144.64-28,405.12

Finding the Fourth Proportional to 52,278.40, 72,144.64 and 28,405.12

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Solution

The fourth proportional to 52,278.40, 72,144.64 and 28,405.12 is: 39,199.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,278.40 : 72,144.64 = 28,405.12 : x
  2. Step 2: Convert to fraction form
    52,278.40/72,144.64 = 28,405.12/x
  3. Step 3: Cross multiply
    52,278.40x = 72,144.64 × 28,405.12
  4. Step 4: Simplify right side
    52,278.40x = 2,049,277,156.56
  5. Step 5: Solve for x
    x = 2,049,277,156.56/52,278.40
  6. Step 6: Final answer
    x = 39,199.31

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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.