Home / 70,209.10-105,314.10-28,092.70

Finding the Fourth Proportional to 70,209.10, 105,314.10 and 28,092.70

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Solution

The fourth proportional to 70,209.10, 105,314.10 and 28,092.70 is: 42,139.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,209.10 : 105,314.10 = 28,092.70 : x
  2. Step 2: Convert to fraction form
    70,209.10/105,314.10 = 28,092.70/x
  3. Step 3: Cross multiply
    70,209.10x = 105,314.10 × 28,092.70
  4. Step 4: Simplify right side
    70,209.10x = 2,958,557,417.07
  5. Step 5: Solve for x
    x = 2,958,557,417.07/70,209.10
  6. Step 6: Final answer
    x = 42,139.23

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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.