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Finding the Fourth Proportional to 74,220.64, 111,130.08 and 54,348.64

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Solution

The fourth proportional to 74,220.64, 111,130.08 and 54,348.64 is: 81,375.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,220.64 : 111,130.08 = 54,348.64 : x
  2. Step 2: Convert to fraction form
    74,220.64/111,130.08 = 54,348.64/x
  3. Step 3: Cross multiply
    74,220.64x = 111,130.08 × 54,348.64
  4. Step 4: Simplify right side
    74,220.64x = 6,039,768,711.09
  5. Step 5: Solve for x
    x = 6,039,768,711.09/74,220.64
  6. Step 6: Final answer
    x = 81,375.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.