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Finding the Fourth Proportional to 68,437.95, 102,656.92 and 25,751.40

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Solution

The fourth proportional to 68,437.95, 102,656.92 and 25,751.40 is: 38,627.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,437.95 : 102,656.92 = 25,751.40 : x
  2. Step 2: Convert to fraction form
    68,437.95/102,656.92 = 25,751.40/x
  3. Step 3: Cross multiply
    68,437.95x = 102,656.92 × 25,751.40
  4. Step 4: Simplify right side
    68,437.95x = 2,643,559,409.69
  5. Step 5: Solve for x
    x = 2,643,559,409.69/68,437.95
  6. Step 6: Final answer
    x = 38,627.10

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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.