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Finding the Fourth Proportional to 52,680, 72,712.72 and 30,030.90

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Solution

The fourth proportional to 52,680, 72,712.72 and 30,030.90 is: 41,450.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,680 : 72,712.72 = 30,030.90 : x
  2. Step 2: Convert to fraction form
    52,680/72,712.72 = 30,030.90/x
  3. Step 3: Cross multiply
    52,680x = 72,712.72 × 30,030.90
  4. Step 4: Simplify right side
    52,680x = 2,183,628,423.05
  5. Step 5: Solve for x
    x = 2,183,628,423.05/52,680
  6. Step 6: Final answer
    x = 41,450.81

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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.