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Finding the Fourth Proportional to 57,955.92, 86,961.48 and 28,357.56

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Solution

The fourth proportional to 57,955.92, 86,961.48 and 28,357.56 is: 42,549.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,955.92 : 86,961.48 = 28,357.56 : x
  2. Step 2: Convert to fraction form
    57,955.92/86,961.48 = 28,357.56/x
  3. Step 3: Cross multiply
    57,955.92x = 86,961.48 × 28,357.56
  4. Step 4: Simplify right side
    57,955.92x = 2,466,015,386.79
  5. Step 5: Solve for x
    x = 2,466,015,386.79/57,955.92
  6. Step 6: Final answer
    x = 42,549.84

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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.