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Finding the Fourth Proportional to 66,058, 99,087 and 19,310.88

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Solution

The fourth proportional to 66,058, 99,087 and 19,310.88 is: 28,966.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,058 : 99,087 = 19,310.88 : x
  2. Step 2: Convert to fraction form
    66,058/99,087 = 19,310.88/x
  3. Step 3: Cross multiply
    66,058x = 99,087 × 19,310.88
  4. Step 4: Simplify right side
    66,058x = 1,913,457,166.56
  5. Step 5: Solve for x
    x = 1,913,457,166.56/66,058
  6. Step 6: Final answer
    x = 28,966.32

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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.