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Finding the Fourth Proportional to 71,511.63, 98,704.18 and 48,859.77

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Solution

The fourth proportional to 71,511.63, 98,704.18 and 48,859.77 is: 67,438.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,511.63 : 98,704.18 = 48,859.77 : x
  2. Step 2: Convert to fraction form
    71,511.63/98,704.18 = 48,859.77/x
  3. Step 3: Cross multiply
    71,511.63x = 98,704.18 × 48,859.77
  4. Step 4: Simplify right side
    71,511.63x = 4,822,663,532.84
  5. Step 5: Solve for x
    x = 4,822,663,532.84/71,511.63
  6. Step 6: Final answer
    x = 67,438.87

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1.5x scale

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.