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Finding the Fourth Proportional to 70,145.66, 105,260.40 and 25,776.89

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Solution

The fourth proportional to 70,145.66, 105,260.40 and 25,776.89 is: 38,680.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,145.66 : 105,260.40 = 25,776.89 : x
  2. Step 2: Convert to fraction form
    70,145.66/105,260.40 = 25,776.89/x
  3. Step 3: Cross multiply
    70,145.66x = 105,260.40 × 25,776.89
  4. Step 4: Simplify right side
    70,145.66x = 2,713,286,015.31
  5. Step 5: Solve for x
    x = 2,713,286,015.31/70,145.66
  6. Step 6: Final answer
    x = 38,680.74

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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.