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Finding the Fourth Proportional to 92,856.96, 128,139.04 and 50,414.56

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Solution

The fourth proportional to 92,856.96, 128,139.04 and 50,414.56 is: 69,570.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,856.96 : 128,139.04 = 50,414.56 : x
  2. Step 2: Convert to fraction form
    92,856.96/128,139.04 = 50,414.56/x
  3. Step 3: Cross multiply
    92,856.96x = 128,139.04 × 50,414.56
  4. Step 4: Simplify right side
    92,856.96x = 6,460,073,320.42
  5. Step 5: Solve for x
    x = 6,460,073,320.42/92,856.96
  6. Step 6: Final answer
    x = 69,570.16

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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.