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Finding the Fourth Proportional to 65,981.76, 98,957.44 and 39,335.26

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Solution

The fourth proportional to 65,981.76, 98,957.44 and 39,335.26 is: 58,993.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,981.76 : 98,957.44 = 39,335.26 : x
  2. Step 2: Convert to fraction form
    65,981.76/98,957.44 = 39,335.26/x
  3. Step 3: Cross multiply
    65,981.76x = 98,957.44 × 39,335.26
  4. Step 4: Simplify right side
    65,981.76x = 3,892,516,631.33
  5. Step 5: Solve for x
    x = 3,892,516,631.33/65,981.76
  6. Step 6: Final answer
    x = 58,993.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.