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Finding the Fourth Proportional to 70,293.16, 105,405.72 and 25,940.80

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Solution

The fourth proportional to 70,293.16, 105,405.72 and 25,940.80 is: 38,898.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,293.16 : 105,405.72 = 25,940.80 : x
  2. Step 2: Convert to fraction form
    70,293.16/105,405.72 = 25,940.80/x
  3. Step 3: Cross multiply
    70,293.16x = 105,405.72 × 25,940.80
  4. Step 4: Simplify right side
    70,293.16x = 2,734,308,701.38
  5. Step 5: Solve for x
    x = 2,734,308,701.38/70,293.16
  6. Step 6: Final answer
    x = 38,898.65

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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.