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Finding the Fourth Proportional to 70,283.11, 105,357 and 25,885.65

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Solution

The fourth proportional to 70,283.11, 105,357 and 25,885.65 is: 38,803.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,283.11 : 105,357 = 25,885.65 : x
  2. Step 2: Convert to fraction form
    70,283.11/105,357 = 25,885.65/x
  3. Step 3: Cross multiply
    70,283.11x = 105,357 × 25,885.65
  4. Step 4: Simplify right side
    70,283.11x = 2,727,234,427.05
  5. Step 5: Solve for x
    x = 2,727,234,427.05/70,283.11
  6. Step 6: Final answer
    x = 38,803.55

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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.