Home / 70,275.29-105,414.47-28,175.20

Finding the Fourth Proportional to 70,275.29, 105,414.47 and 28,175.20

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Solution

The fourth proportional to 70,275.29, 105,414.47 and 28,175.20 is: 42,263.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,275.29 : 105,414.47 = 28,175.20 : x
  2. Step 2: Convert to fraction form
    70,275.29/105,414.47 = 28,175.20/x
  3. Step 3: Cross multiply
    70,275.29x = 105,414.47 × 28,175.20
  4. Step 4: Simplify right side
    70,275.29x = 2,970,073,775.14
  5. Step 5: Solve for x
    x = 2,970,073,775.14/70,275.29
  6. Step 6: Final answer
    x = 42,263.42

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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.