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Finding the Fourth Proportional to 66,467.40, 99,701.10 and 38,819.40

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Solution

The fourth proportional to 66,467.40, 99,701.10 and 38,819.40 is: 58,229.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,467.40 : 99,701.10 = 38,819.40 : x
  2. Step 2: Convert to fraction form
    66,467.40/99,701.10 = 38,819.40/x
  3. Step 3: Cross multiply
    66,467.40x = 99,701.10 × 38,819.40
  4. Step 4: Simplify right side
    66,467.40x = 3,870,336,881.34
  5. Step 5: Solve for x
    x = 3,870,336,881.34/66,467.40
  6. Step 6: Final answer
    x = 58,229.10

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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.