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Finding the Fourth Proportional to 79,433.46, 109,545.02 and 53,977.98

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Solution

The fourth proportional to 79,433.46, 109,545.02 and 53,977.98 is: 74,439.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,433.46 : 109,545.02 = 53,977.98 : x
  2. Step 2: Convert to fraction form
    79,433.46/109,545.02 = 53,977.98/x
  3. Step 3: Cross multiply
    79,433.46x = 109,545.02 × 53,977.98
  4. Step 4: Simplify right side
    79,433.46x = 5,913,018,898.66
  5. Step 5: Solve for x
    x = 5,913,018,898.66/79,433.46
  6. Step 6: Final answer
    x = 74,439.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.