Home / 66,458.40-91,715.52-38,172.96

Finding the Fourth Proportional to 66,458.40, 91,715.52 and 38,172.96

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Solution

The fourth proportional to 66,458.40, 91,715.52 and 38,172.96 is: 52,680.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,458.40 : 91,715.52 = 38,172.96 : x
  2. Step 2: Convert to fraction form
    66,458.40/91,715.52 = 38,172.96/x
  3. Step 3: Cross multiply
    66,458.40x = 91,715.52 × 38,172.96
  4. Step 4: Simplify right side
    66,458.40x = 3,501,052,876.34
  5. Step 5: Solve for x
    x = 3,501,052,876.34/66,458.40
  6. Step 6: Final answer
    x = 52,680.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.