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Finding the Fourth Proportional to 82,800.90, 124,237.80 and 38,404.80

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Solution

The fourth proportional to 82,800.90, 124,237.80 and 38,404.80 is: 57,624.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,800.90 : 124,237.80 = 38,404.80 : x
  2. Step 2: Convert to fraction form
    82,800.90/124,237.80 = 38,404.80/x
  3. Step 3: Cross multiply
    82,800.90x = 124,237.80 × 38,404.80
  4. Step 4: Simplify right side
    82,800.90x = 4,771,327,861.44
  5. Step 5: Solve for x
    x = 4,771,327,861.44/82,800.90
  6. Step 6: Final answer
    x = 57,624.11

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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.