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Finding the Fourth Proportional to 57,825.44, 79,864.80 and 38,929.76

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Solution

The fourth proportional to 57,825.44, 79,864.80 and 38,929.76 is: 53,767.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,825.44 : 79,864.80 = 38,929.76 : x
  2. Step 2: Convert to fraction form
    57,825.44/79,864.80 = 38,929.76/x
  3. Step 3: Cross multiply
    57,825.44x = 79,864.80 × 38,929.76
  4. Step 4: Simplify right side
    57,825.44x = 3,109,117,496.45
  5. Step 5: Solve for x
    x = 3,109,117,496.45/57,825.44
  6. Step 6: Final answer
    x = 53,767.30

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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.