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Finding the Fourth Proportional to 65,861.84, 98,792.35 and 21,488.62

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Solution

The fourth proportional to 65,861.84, 98,792.35 and 21,488.62 is: 32,232.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,861.84 : 98,792.35 = 21,488.62 : x
  2. Step 2: Convert to fraction form
    65,861.84/98,792.35 = 21,488.62/x
  3. Step 3: Cross multiply
    65,861.84x = 98,792.35 × 21,488.62
  4. Step 4: Simplify right side
    65,861.84x = 2,122,911,268.06
  5. Step 5: Solve for x
    x = 2,122,911,268.06/65,861.84
  6. Step 6: Final answer
    x = 32,232.80

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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.