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Finding the Fourth Proportional to 99,385, 149,045.70 and 32,810.20

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Solution

The fourth proportional to 99,385, 149,045.70 and 32,810.20 is: 49,204.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,385 : 149,045.70 = 32,810.20 : x
  2. Step 2: Convert to fraction form
    99,385/149,045.70 = 32,810.20/x
  3. Step 3: Cross multiply
    99,385x = 149,045.70 × 32,810.20
  4. Step 4: Simplify right side
    99,385x = 4,890,219,226.14
  5. Step 5: Solve for x
    x = 4,890,219,226.14/99,385
  6. Step 6: Final answer
    x = 49,204.80

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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.