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Finding the Fourth Proportional to 65,777.28, 90,713.10 and 43,108.14

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Solution

The fourth proportional to 65,777.28, 90,713.10 and 43,108.14 is: 59,450.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,777.28 : 90,713.10 = 43,108.14 : x
  2. Step 2: Convert to fraction form
    65,777.28/90,713.10 = 43,108.14/x
  3. Step 3: Cross multiply
    65,777.28x = 90,713.10 × 43,108.14
  4. Step 4: Simplify right side
    65,777.28x = 3,910,473,014.63
  5. Step 5: Solve for x
    x = 3,910,473,014.63/65,777.28
  6. Step 6: Final answer
    x = 59,450.21

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1.5x scale

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.