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Finding the Fourth Proportional to 70,670.95, 105,964.91 and 28,552.36

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Solution

The fourth proportional to 70,670.95, 105,964.91 and 28,552.36 is: 42,811.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,670.95 : 105,964.91 = 28,552.36 : x
  2. Step 2: Convert to fraction form
    70,670.95/105,964.91 = 28,552.36/x
  3. Step 3: Cross multiply
    70,670.95x = 105,964.91 × 28,552.36
  4. Step 4: Simplify right side
    70,670.95x = 3,025,548,257.69
  5. Step 5: Solve for x
    x = 3,025,548,257.69/70,670.95
  6. Step 6: Final answer
    x = 42,811.77

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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.