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Finding the Fourth Proportional to 60,428.96, 90,634.08 and 30,868.64

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Solution

The fourth proportional to 60,428.96, 90,634.08 and 30,868.64 is: 46,298.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,428.96 : 90,634.08 = 30,868.64 : x
  2. Step 2: Convert to fraction form
    60,428.96/90,634.08 = 30,868.64/x
  3. Step 3: Cross multiply
    60,428.96x = 90,634.08 × 30,868.64
  4. Step 4: Simplify right side
    60,428.96x = 2,797,750,787.25
  5. Step 5: Solve for x
    x = 2,797,750,787.25/60,428.96
  6. Step 6: Final answer
    x = 46,298.18

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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.