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Finding the Fourth Proportional to 76,520.28, 114,787.02 and 21,116.28

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Solution

The fourth proportional to 76,520.28, 114,787.02 and 21,116.28 is: 31,676.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,520.28 : 114,787.02 = 21,116.28 : x
  2. Step 2: Convert to fraction form
    76,520.28/114,787.02 = 21,116.28/x
  3. Step 3: Cross multiply
    76,520.28x = 114,787.02 × 21,116.28
  4. Step 4: Simplify right side
    76,520.28x = 2,423,874,854.69
  5. Step 5: Solve for x
    x = 2,423,874,854.69/76,520.28
  6. Step 6: Final answer
    x = 31,676.24

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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.