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Finding the Fourth Proportional to 69,200.55, 103,655.03 and 56,078.55

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Solution

The fourth proportional to 69,200.55, 103,655.03 and 56,078.55 is: 83,999.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,200.55 : 103,655.03 = 56,078.55 : x
  2. Step 2: Convert to fraction form
    69,200.55/103,655.03 = 56,078.55/x
  3. Step 3: Cross multiply
    69,200.55x = 103,655.03 × 56,078.55
  4. Step 4: Simplify right side
    69,200.55x = 5,812,823,502.21
  5. Step 5: Solve for x
    x = 5,812,823,502.21/69,200.55
  6. Step 6: Final answer
    x = 83,999.67

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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.