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Finding the Fourth Proportional to 108,974.70, 163,510.65 and 49,779.90

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Solution

The fourth proportional to 108,974.70, 163,510.65 and 49,779.90 is: 74,692.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,974.70 : 163,510.65 = 49,779.90 : x
  2. Step 2: Convert to fraction form
    108,974.70/163,510.65 = 49,779.90/x
  3. Step 3: Cross multiply
    108,974.70x = 163,510.65 × 49,779.90
  4. Step 4: Simplify right side
    108,974.70x = 8,139,543,805.94
  5. Step 5: Solve for x
    x = 8,139,543,805.94/108,974.70
  6. Step 6: Final answer
    x = 74,692.05

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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.