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Finding the Fourth Proportional to 74,944.51, 112,416.78 and 20,907.08

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Solution

The fourth proportional to 74,944.51, 112,416.78 and 20,907.08 is: 31,360.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,944.51 : 112,416.78 = 20,907.08 : x
  2. Step 2: Convert to fraction form
    74,944.51/112,416.78 = 20,907.08/x
  3. Step 3: Cross multiply
    74,944.51x = 112,416.78 × 20,907.08
  4. Step 4: Simplify right side
    74,944.51x = 2,350,306,612.80
  5. Step 5: Solve for x
    x = 2,350,306,612.80/74,944.51
  6. Step 6: Final answer
    x = 31,360.62

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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.