Home / 70,518.26-105,636.36-42,422.84

Finding the Fourth Proportional to 70,518.26, 105,636.36 and 42,422.84

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Solution

The fourth proportional to 70,518.26, 105,636.36 and 42,422.84 is: 63,549.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,518.26 : 105,636.36 = 42,422.84 : x
  2. Step 2: Convert to fraction form
    70,518.26/105,636.36 = 42,422.84/x
  3. Step 3: Cross multiply
    70,518.26x = 105,636.36 × 42,422.84
  4. Step 4: Simplify right side
    70,518.26x = 4,481,394,398.46
  5. Step 5: Solve for x
    x = 4,481,394,398.46/70,518.26
  6. Step 6: Final answer
    x = 63,549.42

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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.