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Finding the Fourth Proportional to 66,730.80, 99,853.20 and 49,234.80

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Solution

The fourth proportional to 66,730.80, 99,853.20 and 49,234.80 is: 73,672.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,730.80 : 99,853.20 = 49,234.80 : x
  2. Step 2: Convert to fraction form
    66,730.80/99,853.20 = 49,234.80/x
  3. Step 3: Cross multiply
    66,730.80x = 99,853.20 × 49,234.80
  4. Step 4: Simplify right side
    66,730.80x = 4,916,252,331.36
  5. Step 5: Solve for x
    x = 4,916,252,331.36/66,730.80
  6. Step 6: Final answer
    x = 73,672.91

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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.