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Finding the Fourth Proportional to 70,254.36, 105,423.12 and 25,912.32

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Solution

The fourth proportional to 70,254.36, 105,423.12 and 25,912.32 is: 38,883.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,254.36 : 105,423.12 = 25,912.32 : x
  2. Step 2: Convert to fraction form
    70,254.36/105,423.12 = 25,912.32/x
  3. Step 3: Cross multiply
    70,254.36x = 105,423.12 × 25,912.32
  4. Step 4: Simplify right side
    70,254.36x = 2,731,757,620.84
  5. Step 5: Solve for x
    x = 2,731,757,620.84/70,254.36
  6. Step 6: Final answer
    x = 38,883.82

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1.5x scale

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.