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Finding the Fourth Proportional to 271,712.60, 407,586.90 and 72,030.20

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Solution

The fourth proportional to 271,712.60, 407,586.90 and 72,030.20 is: 108,050.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,712.60 : 407,586.90 = 72,030.20 : x
  2. Step 2: Convert to fraction form
    271,712.60/407,586.90 = 72,030.20/x
  3. Step 3: Cross multiply
    271,712.60x = 407,586.90 × 72,030.20
  4. Step 4: Simplify right side
    271,712.60x = 29,358,565,924.38
  5. Step 5: Solve for x
    x = 29,358,565,924.38/271,712.60
  6. Step 6: Final answer
    x = 108,050.07

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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.