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Finding the Fourth Proportional to 70,322.15, 105,454.82 and 25,939.05

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Solution

The fourth proportional to 70,322.15, 105,454.82 and 25,939.05 is: 38,898.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,322.15 : 105,454.82 = 25,939.05 : x
  2. Step 2: Convert to fraction form
    70,322.15/105,454.82 = 25,939.05/x
  3. Step 3: Cross multiply
    70,322.15x = 105,454.82 × 25,939.05
  4. Step 4: Simplify right side
    70,322.15x = 2,735,397,719.03
  5. Step 5: Solve for x
    x = 2,735,397,719.03/70,322.15
  6. Step 6: Final answer
    x = 38,898.10

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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.