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Finding the Fourth Proportional to 48,398, 72,624.60 and 18,811.98

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Solution

The fourth proportional to 48,398, 72,624.60 and 18,811.98 is: 28,228.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,398 : 72,624.60 = 18,811.98 : x
  2. Step 2: Convert to fraction form
    48,398/72,624.60 = 18,811.98/x
  3. Step 3: Cross multiply
    48,398x = 72,624.60 × 18,811.98
  4. Step 4: Simplify right side
    48,398x = 1,366,212,522.71
  5. Step 5: Solve for x
    x = 1,366,212,522.71/48,398
  6. Step 6: Final answer
    x = 28,228.70

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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.