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Finding the Fourth Proportional to 70,260.94, 105,432.99 and 25,918.86

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Solution

The fourth proportional to 70,260.94, 105,432.99 and 25,918.86 is: 38,893.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,260.94 : 105,432.99 = 25,918.86 : x
  2. Step 2: Convert to fraction form
    70,260.94/105,432.99 = 25,918.86/x
  3. Step 3: Cross multiply
    70,260.94x = 105,432.99 × 25,918.86
  4. Step 4: Simplify right side
    70,260.94x = 2,732,702,907.19
  5. Step 5: Solve for x
    x = 2,732,702,907.19/70,260.94
  6. Step 6: Final answer
    x = 38,893.63

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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.