Home / 70,282.13-105,423.29-28,729.13

Finding the Fourth Proportional to 70,282.13, 105,423.29 and 28,729.13

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Solution

The fourth proportional to 70,282.13, 105,423.29 and 28,729.13 is: 43,093.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,282.13 : 105,423.29 = 28,729.13 : x
  2. Step 2: Convert to fraction form
    70,282.13/105,423.29 = 28,729.13/x
  3. Step 3: Cross multiply
    70,282.13x = 105,423.29 × 28,729.13
  4. Step 4: Simplify right side
    70,282.13x = 3,028,718,840.41
  5. Step 5: Solve for x
    x = 3,028,718,840.41/70,282.13
  6. Step 6: Final answer
    x = 43,093.73

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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.