Home / 51,891.21-77,784.80-20,257.77

Finding the Fourth Proportional to 51,891.21, 77,784.80 and 20,257.77

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Solution

The fourth proportional to 51,891.21, 77,784.80 and 20,257.77 is: 30,366.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,891.21 : 77,784.80 = 20,257.77 : x
  2. Step 2: Convert to fraction form
    51,891.21/77,784.80 = 20,257.77/x
  3. Step 3: Cross multiply
    51,891.21x = 77,784.80 × 20,257.77
  4. Step 4: Simplify right side
    51,891.21x = 1,575,746,587.90
  5. Step 5: Solve for x
    x = 1,575,746,587.90/51,891.21
  6. Step 6: Final answer
    x = 30,366.35

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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.