Home / 70,215.12-105,322.68-30,763.26

Finding the Fourth Proportional to 70,215.12, 105,322.68 and 30,763.26

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Solution

The fourth proportional to 70,215.12, 105,322.68 and 30,763.26 is: 46,144.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,215.12 : 105,322.68 = 30,763.26 : x
  2. Step 2: Convert to fraction form
    70,215.12/105,322.68 = 30,763.26/x
  3. Step 3: Cross multiply
    70,215.12x = 105,322.68 × 30,763.26
  4. Step 4: Simplify right side
    70,215.12x = 3,240,068,988.74
  5. Step 5: Solve for x
    x = 3,240,068,988.74/70,215.12
  6. Step 6: Final answer
    x = 46,144.89

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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.