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Finding the Fourth Proportional to 65,848.95, 98,788.95 and 21,475.80

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Solution

The fourth proportional to 65,848.95, 98,788.95 and 21,475.80 is: 32,218.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,848.95 : 98,788.95 = 21,475.80 : x
  2. Step 2: Convert to fraction form
    65,848.95/98,788.95 = 21,475.80/x
  3. Step 3: Cross multiply
    65,848.95x = 98,788.95 × 21,475.80
  4. Step 4: Simplify right side
    65,848.95x = 2,121,571,732.41
  5. Step 5: Solve for x
    x = 2,121,571,732.41/65,848.95
  6. Step 6: Final answer
    x = 32,218.76

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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.