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Finding the Fourth Proportional to 76,919.63, 106,152.73 and 43,385.63

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Solution

The fourth proportional to 76,919.63, 106,152.73 and 43,385.63 is: 59,874.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,919.63 : 106,152.73 = 43,385.63 : x
  2. Step 2: Convert to fraction form
    76,919.63/106,152.73 = 43,385.63/x
  3. Step 3: Cross multiply
    76,919.63x = 106,152.73 × 43,385.63
  4. Step 4: Simplify right side
    76,919.63x = 4,605,502,428.04
  5. Step 5: Solve for x
    x = 4,605,502,428.04/76,919.63
  6. Step 6: Final answer
    x = 59,874.22

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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.