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Finding the Fourth Proportional to 77,079.72, 106,361.46 and 43,545.72

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Solution

The fourth proportional to 77,079.72, 106,361.46 and 43,545.72 is: 60,088.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,079.72 : 106,361.46 = 43,545.72 : x
  2. Step 2: Convert to fraction form
    77,079.72/106,361.46 = 43,545.72/x
  3. Step 3: Cross multiply
    77,079.72x = 106,361.46 × 43,545.72
  4. Step 4: Simplify right side
    77,079.72x = 4,631,586,355.95
  5. Step 5: Solve for x
    x = 4,631,586,355.95/77,079.72
  6. Step 6: Final answer
    x = 60,088.26

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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.