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Finding the Fourth Proportional to 66,043.52, 91,140.40 and 35,830.12

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Solution

The fourth proportional to 66,043.52, 91,140.40 and 35,830.12 is: 49,445.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,043.52 : 91,140.40 = 35,830.12 : x
  2. Step 2: Convert to fraction form
    66,043.52/91,140.40 = 35,830.12/x
  3. Step 3: Cross multiply
    66,043.52x = 91,140.40 × 35,830.12
  4. Step 4: Simplify right side
    66,043.52x = 3,265,571,285.78
  5. Step 5: Solve for x
    x = 3,265,571,285.78/66,043.52
  6. Step 6: Final answer
    x = 49,445.75

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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.