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Finding the Fourth Proportional to 35,010.90, 48,323.76 and 20,861

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Solution

The fourth proportional to 35,010.90, 48,323.76 and 20,861 is: 28,793.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,010.90 : 48,323.76 = 20,861 : x
  2. Step 2: Convert to fraction form
    35,010.90/48,323.76 = 20,861/x
  3. Step 3: Cross multiply
    35,010.90x = 48,323.76 × 20,861
  4. Step 4: Simplify right side
    35,010.90x = 1,008,081,957.36
  5. Step 5: Solve for x
    x = 1,008,081,957.36/35,010.90
  6. Step 6: Final answer
    x = 28,793.37

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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.