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Finding the Fourth Proportional to 30,124.43, 45,188.99 and 7,937.55

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Solution

The fourth proportional to 30,124.43, 45,188.99 and 7,937.55 is: 11,906.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,124.43 : 45,188.99 = 7,937.55 : x
  2. Step 2: Convert to fraction form
    30,124.43/45,188.99 = 7,937.55/x
  3. Step 3: Cross multiply
    30,124.43x = 45,188.99 × 7,937.55
  4. Step 4: Simplify right side
    30,124.43x = 358,689,827.89
  5. Step 5: Solve for x
    x = 358,689,827.89/30,124.43
  6. Step 6: Final answer
    x = 11,906.94

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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.