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Finding the Fourth Proportional to 48,495.87, 72,700.66 and 18,934.41

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Solution

The fourth proportional to 48,495.87, 72,700.66 and 18,934.41 is: 28,384.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,495.87 : 72,700.66 = 18,934.41 : x
  2. Step 2: Convert to fraction form
    48,495.87/72,700.66 = 18,934.41/x
  3. Step 3: Cross multiply
    48,495.87x = 72,700.66 × 18,934.41
  4. Step 4: Simplify right side
    48,495.87x = 1,376,544,103.71
  5. Step 5: Solve for x
    x = 1,376,544,103.71/48,495.87
  6. Step 6: Final answer
    x = 28,384.77

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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.