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Finding the Fourth Proportional to 103,586.72, 155,378.80 and 29,714.72

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Solution

The fourth proportional to 103,586.72, 155,378.80 and 29,714.72 is: 44,571.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,586.72 : 155,378.80 = 29,714.72 : x
  2. Step 2: Convert to fraction form
    103,586.72/155,378.80 = 29,714.72/x
  3. Step 3: Cross multiply
    103,586.72x = 155,378.80 × 29,714.72
  4. Step 4: Simplify right side
    103,586.72x = 4,617,037,535.94
  5. Step 5: Solve for x
    x = 4,617,037,535.94/103,586.72
  6. Step 6: Final answer
    x = 44,571.71

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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.