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Finding the Fourth Proportional to 70,416.64, 105,628.32 and 17,826.56

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Solution

The fourth proportional to 70,416.64, 105,628.32 and 17,826.56 is: 26,740.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,416.64 : 105,628.32 = 17,826.56 : x
  2. Step 2: Convert to fraction form
    70,416.64/105,628.32 = 17,826.56/x
  3. Step 3: Cross multiply
    70,416.64x = 105,628.32 × 17,826.56
  4. Step 4: Simplify right side
    70,416.64x = 1,882,989,584.18
  5. Step 5: Solve for x
    x = 1,882,989,584.18/70,416.64
  6. Step 6: Final answer
    x = 26,740.69

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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.