Home / 70,017.12-105,065.64-25,638

Finding the Fourth Proportional to 70,017.12, 105,065.64 and 25,638

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Solution

The fourth proportional to 70,017.12, 105,065.64 and 25,638 is: 38,471.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,017.12 : 105,065.64 = 25,638 : x
  2. Step 2: Convert to fraction form
    70,017.12/105,065.64 = 25,638/x
  3. Step 3: Cross multiply
    70,017.12x = 105,065.64 × 25,638
  4. Step 4: Simplify right side
    70,017.12x = 2,693,672,878.32
  5. Step 5: Solve for x
    x = 2,693,672,878.32/70,017.12
  6. Step 6: Final answer
    x = 38,471.63

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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.