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Finding the Fourth Proportional to 66,130.71, 91,261.34 and 35,916.09

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Solution

The fourth proportional to 66,130.71, 91,261.34 and 35,916.09 is: 49,564.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,130.71 : 91,261.34 = 35,916.09 : x
  2. Step 2: Convert to fraction form
    66,130.71/91,261.34 = 35,916.09/x
  3. Step 3: Cross multiply
    66,130.71x = 91,261.34 × 35,916.09
  4. Step 4: Simplify right side
    66,130.71x = 3,277,750,321.38
  5. Step 5: Solve for x
    x = 3,277,750,321.38/66,130.71
  6. Step 6: Final answer
    x = 49,564.72

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1.5x scale

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.