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Finding the Fourth Proportional to 72,683.82, 109,068.03 and 30,560.85

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Solution

The fourth proportional to 72,683.82, 109,068.03 and 30,560.85 is: 45,859.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,683.82 : 109,068.03 = 30,560.85 : x
  2. Step 2: Convert to fraction form
    72,683.82/109,068.03 = 30,560.85/x
  3. Step 3: Cross multiply
    72,683.82x = 109,068.03 × 30,560.85
  4. Step 4: Simplify right side
    72,683.82x = 3,333,211,355.55
  5. Step 5: Solve for x
    x = 3,333,211,355.55/72,683.82
  6. Step 6: Final answer
    x = 45,859.06

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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.