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Finding the Fourth Proportional to 65,777.76, 98,644.29 and 21,393.50

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Solution

The fourth proportional to 65,777.76, 98,644.29 and 21,393.50 is: 32,082.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,777.76 : 98,644.29 = 21,393.50 : x
  2. Step 2: Convert to fraction form
    65,777.76/98,644.29 = 21,393.50/x
  3. Step 3: Cross multiply
    65,777.76x = 98,644.29 × 21,393.50
  4. Step 4: Simplify right side
    65,777.76x = 2,110,346,044.67
  5. Step 5: Solve for x
    x = 2,110,346,044.67/65,777.76
  6. Step 6: Final answer
    x = 32,082.97

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1.5x scale

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.