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Finding the Fourth Proportional to 60,384.72, 90,671.88 and 51,145.88

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Solution

The fourth proportional to 60,384.72, 90,671.88 and 51,145.88 is: 76,799.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,384.72 : 90,671.88 = 51,145.88 : x
  2. Step 2: Convert to fraction form
    60,384.72/90,671.88 = 51,145.88/x
  3. Step 3: Cross multiply
    60,384.72x = 90,671.88 × 51,145.88
  4. Step 4: Simplify right side
    60,384.72x = 4,637,493,093.85
  5. Step 5: Solve for x
    x = 4,637,493,093.85/60,384.72
  6. Step 6: Final answer
    x = 76,799.12

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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.