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Finding the Fourth Proportional to 66,100.47, 91,218.80 and 35,885.87

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Solution

The fourth proportional to 66,100.47, 91,218.80 and 35,885.87 is: 49,522.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,100.47 : 91,218.80 = 35,885.87 : x
  2. Step 2: Convert to fraction form
    66,100.47/91,218.80 = 35,885.87/x
  3. Step 3: Cross multiply
    66,100.47x = 91,218.80 × 35,885.87
  4. Step 4: Simplify right side
    66,100.47x = 3,273,465,362.83
  5. Step 5: Solve for x
    x = 3,273,465,362.83/66,100.47
  6. Step 6: Final answer
    x = 49,522.57

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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.