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Finding the Fourth Proportional to 70,056.88, 105,028.56 and 47,814.28

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Solution

The fourth proportional to 70,056.88, 105,028.56 and 47,814.28 is: 71,682.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,056.88 : 105,028.56 = 47,814.28 : x
  2. Step 2: Convert to fraction form
    70,056.88/105,028.56 = 47,814.28/x
  3. Step 3: Cross multiply
    70,056.88x = 105,028.56 × 47,814.28
  4. Step 4: Simplify right side
    70,056.88x = 5,021,864,975.84
  5. Step 5: Solve for x
    x = 5,021,864,975.84/70,056.88
  6. Step 6: Final answer
    x = 71,682.68

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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.