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Finding the Fourth Proportional to 51,000.70, 76,501.05 and 21,451.90

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Solution

The fourth proportional to 51,000.70, 76,501.05 and 21,451.90 is: 32,177.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,000.70 : 76,501.05 = 21,451.90 : x
  2. Step 2: Convert to fraction form
    51,000.70/76,501.05 = 21,451.90/x
  3. Step 3: Cross multiply
    51,000.70x = 76,501.05 × 21,451.90
  4. Step 4: Simplify right side
    51,000.70x = 1,641,092,874.50
  5. Step 5: Solve for x
    x = 1,641,092,874.50/51,000.70
  6. Step 6: Final answer
    x = 32,177.85

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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.