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Finding the Fourth Proportional to 87,037, 130,537.20 and 42,619

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Solution

The fourth proportional to 87,037, 130,537.20 and 42,619 is: 63,919.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,037 : 130,537.20 = 42,619 : x
  2. Step 2: Convert to fraction form
    87,037/130,537.20 = 42,619/x
  3. Step 3: Cross multiply
    87,037x = 130,537.20 × 42,619
  4. Step 4: Simplify right side
    87,037x = 5,563,364,926.80
  5. Step 5: Solve for x
    x = 5,563,364,926.80/87,037
  6. Step 6: Final answer
    x = 63,919.54

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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.