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Finding the Fourth Proportional to 30,258.92, 45,462.52 and 28,580.40

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Solution

The fourth proportional to 30,258.92, 45,462.52 and 28,580.40 is: 42,940.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,258.92 : 45,462.52 = 28,580.40 : x
  2. Step 2: Convert to fraction form
    30,258.92/45,462.52 = 28,580.40/x
  3. Step 3: Cross multiply
    30,258.92x = 45,462.52 × 28,580.40
  4. Step 4: Simplify right side
    30,258.92x = 1,299,337,006.61
  5. Step 5: Solve for x
    x = 1,299,337,006.61/30,258.92
  6. Step 6: Final answer
    x = 42,940.63

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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.