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Finding the Fourth Proportional to 70,262.26, 105,434.91 and 25,920.16

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Solution

The fourth proportional to 70,262.26, 105,434.91 and 25,920.16 is: 38,895.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,262.26 : 105,434.91 = 25,920.16 : x
  2. Step 2: Convert to fraction form
    70,262.26/105,434.91 = 25,920.16/x
  3. Step 3: Cross multiply
    70,262.26x = 105,434.91 × 25,920.16
  4. Step 4: Simplify right side
    70,262.26x = 2,732,889,473.20
  5. Step 5: Solve for x
    x = 2,732,889,473.20/70,262.26
  6. Step 6: Final answer
    x = 38,895.55

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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.