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Finding the Fourth Proportional to 65,870.88, 98,818.80 and 26,431.10

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Solution

The fourth proportional to 65,870.88, 98,818.80 and 26,431.10 is: 39,651.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,870.88 : 98,818.80 = 26,431.10 : x
  2. Step 2: Convert to fraction form
    65,870.88/98,818.80 = 26,431.10/x
  3. Step 3: Cross multiply
    65,870.88x = 98,818.80 × 26,431.10
  4. Step 4: Simplify right side
    65,870.88x = 2,611,889,584.68
  5. Step 5: Solve for x
    x = 2,611,889,584.68/65,870.88
  6. Step 6: Final answer
    x = 39,651.66

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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.