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Finding the Fourth Proportional to 74,925.80, 112,388.70 and 30,529.70

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Solution

The fourth proportional to 74,925.80, 112,388.70 and 30,529.70 is: 45,794.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,925.80 : 112,388.70 = 30,529.70 : x
  2. Step 2: Convert to fraction form
    74,925.80/112,388.70 = 30,529.70/x
  3. Step 3: Cross multiply
    74,925.80x = 112,388.70 × 30,529.70
  4. Step 4: Simplify right side
    74,925.80x = 3,431,193,294.39
  5. Step 5: Solve for x
    x = 3,431,193,294.39/74,925.80
  6. Step 6: Final answer
    x = 45,794.55

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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.