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Finding the Fourth Proportional to 66,458, 99,559.08 and 52,343.36

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Solution

The fourth proportional to 66,458, 99,559.08 and 52,343.36 is: 78,414.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,458 : 99,559.08 = 52,343.36 : x
  2. Step 2: Convert to fraction form
    66,458/99,559.08 = 52,343.36/x
  3. Step 3: Cross multiply
    66,458x = 99,559.08 × 52,343.36
  4. Step 4: Simplify right side
    66,458x = 5,211,256,765.71
  5. Step 5: Solve for x
    x = 5,211,256,765.71/66,458
  6. Step 6: Final answer
    x = 78,414.29

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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.