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Finding the Fourth Proportional to 66,130.98, 91,260.74 and 35,916.36

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Solution

The fourth proportional to 66,130.98, 91,260.74 and 35,916.36 is: 49,564.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,130.98 : 91,260.74 = 35,916.36 : x
  2. Step 2: Convert to fraction form
    66,130.98/91,260.74 = 35,916.36/x
  3. Step 3: Cross multiply
    66,130.98x = 91,260.74 × 35,916.36
  4. Step 4: Simplify right side
    66,130.98x = 3,277,753,591.71
  5. Step 5: Solve for x
    x = 3,277,753,591.71/66,130.98
  6. Step 6: Final answer
    x = 49,564.57

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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.