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Finding the Fourth Proportional to 75,728.90, 104,501.61 and 41,737.28

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Solution

The fourth proportional to 75,728.90, 104,501.61 and 41,737.28 is: 57,595.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,728.90 : 104,501.61 = 41,737.28 : x
  2. Step 2: Convert to fraction form
    75,728.90/104,501.61 = 41,737.28/x
  3. Step 3: Cross multiply
    75,728.90x = 104,501.61 × 41,737.28
  4. Step 4: Simplify right side
    75,728.90x = 4,361,613,374.79
  5. Step 5: Solve for x
    x = 4,361,613,374.79/75,728.90
  6. Step 6: Final answer
    x = 57,595.10

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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.