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Finding the Fourth Proportional to 65,402.28, 98,118 and 18,655.56

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Solution

The fourth proportional to 65,402.28, 98,118 and 18,655.56 is: 27,987.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,402.28 : 98,118 = 18,655.56 : x
  2. Step 2: Convert to fraction form
    65,402.28/98,118 = 18,655.56/x
  3. Step 3: Cross multiply
    65,402.28x = 98,118 × 18,655.56
  4. Step 4: Simplify right side
    65,402.28x = 1,830,446,236.08
  5. Step 5: Solve for x
    x = 1,830,446,236.08/65,402.28
  6. Step 6: Final answer
    x = 27,987.50

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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.