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Finding the Fourth Proportional to 105,310.56, 145,328.04 and 57,566.64

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Solution

The fourth proportional to 105,310.56, 145,328.04 and 57,566.64 is: 79,441.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,310.56 : 145,328.04 = 57,566.64 : x
  2. Step 2: Convert to fraction form
    105,310.56/145,328.04 = 57,566.64/x
  3. Step 3: Cross multiply
    105,310.56x = 145,328.04 × 57,566.64
  4. Step 4: Simplify right side
    105,310.56x = 8,366,046,960.59
  5. Step 5: Solve for x
    x = 8,366,046,960.59/105,310.56
  6. Step 6: Final answer
    x = 79,441.67

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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.