Home / 51,143.55-70,578.12-28,486.89

Finding the Fourth Proportional to 51,143.55, 70,578.12 and 28,486.89

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Solution

The fourth proportional to 51,143.55, 70,578.12 and 28,486.89 is: 39,311.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,143.55 : 70,578.12 = 28,486.89 : x
  2. Step 2: Convert to fraction form
    51,143.55/70,578.12 = 28,486.89/x
  3. Step 3: Cross multiply
    51,143.55x = 70,578.12 × 28,486.89
  4. Step 4: Simplify right side
    51,143.55x = 2,010,550,645.52
  5. Step 5: Solve for x
    x = 2,010,550,645.52/51,143.55
  6. Step 6: Final answer
    x = 39,311.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.