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Finding the Fourth Proportional to 72,750.60, 100,394.82 and 40,919.52

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Solution

The fourth proportional to 72,750.60, 100,394.82 and 40,919.52 is: 56,468.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,750.60 : 100,394.82 = 40,919.52 : x
  2. Step 2: Convert to fraction form
    72,750.60/100,394.82 = 40,919.52/x
  3. Step 3: Cross multiply
    72,750.60x = 100,394.82 × 40,919.52
  4. Step 4: Simplify right side
    72,750.60x = 4,108,107,844.89
  5. Step 5: Solve for x
    x = 4,108,107,844.89/72,750.60
  6. Step 6: Final answer
    x = 56,468.37

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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.