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Finding the Fourth Proportional to 35,129.76, 48,479.10 and 19,816.50

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Solution

The fourth proportional to 35,129.76, 48,479.10 and 19,816.50 is: 27,346.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,129.76 : 48,479.10 = 19,816.50 : x
  2. Step 2: Convert to fraction form
    35,129.76/48,479.10 = 19,816.50/x
  3. Step 3: Cross multiply
    35,129.76x = 48,479.10 × 19,816.50
  4. Step 4: Simplify right side
    35,129.76x = 960,686,085.15
  5. Step 5: Solve for x
    x = 960,686,085.15/35,129.76
  6. Step 6: Final answer
    x = 27,346.79

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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.