Home / 43,451.56-65,129.28-28,440.64

Finding the Fourth Proportional to 43,451.56, 65,129.28 and 28,440.64

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Solution

The fourth proportional to 43,451.56, 65,129.28 and 28,440.64 is: 42,629.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,451.56 : 65,129.28 = 28,440.64 : x
  2. Step 2: Convert to fraction form
    43,451.56/65,129.28 = 28,440.64/x
  3. Step 3: Cross multiply
    43,451.56x = 65,129.28 × 28,440.64
  4. Step 4: Simplify right side
    43,451.56x = 1,852,318,405.94
  5. Step 5: Solve for x
    x = 1,852,318,405.94/43,451.56
  6. Step 6: Final answer
    x = 42,629.50

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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.