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Finding the Fourth Proportional to 66,501, 91,771.38 and 45,317.17

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Solution

The fourth proportional to 66,501, 91,771.38 and 45,317.17 is: 62,537.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,501 : 91,771.38 = 45,317.17 : x
  2. Step 2: Convert to fraction form
    66,501/91,771.38 = 45,317.17/x
  3. Step 3: Cross multiply
    66,501x = 91,771.38 × 45,317.17
  4. Step 4: Simplify right side
    66,501x = 4,158,819,343.31
  5. Step 5: Solve for x
    x = 4,158,819,343.31/66,501
  6. Step 6: Final answer
    x = 62,537.70

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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.