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Finding the Fourth Proportional to 66,457, 99,557.58 and 52,342.36

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Solution

The fourth proportional to 66,457, 99,557.58 and 52,342.36 is: 78,412.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,457 : 99,557.58 = 52,342.36 : x
  2. Step 2: Convert to fraction form
    66,457/99,557.58 = 52,342.36/x
  3. Step 3: Cross multiply
    66,457x = 99,557.58 × 52,342.36
  4. Step 4: Simplify right side
    66,457x = 5,211,078,693.09
  5. Step 5: Solve for x
    x = 5,211,078,693.09/66,457
  6. Step 6: Final answer
    x = 78,412.79

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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.