Home / 51,690.06-71,331.12-28,718.34

Finding the Fourth Proportional to 51,690.06, 71,331.12 and 28,718.34

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Solution

The fourth proportional to 51,690.06, 71,331.12 and 28,718.34 is: 39,630.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,690.06 : 71,331.12 = 28,718.34 : x
  2. Step 2: Convert to fraction form
    51,690.06/71,331.12 = 28,718.34/x
  3. Step 3: Cross multiply
    51,690.06x = 71,331.12 × 28,718.34
  4. Step 4: Simplify right side
    51,690.06x = 2,048,511,356.74
  5. Step 5: Solve for x
    x = 2,048,511,356.74/51,690.06
  6. Step 6: Final answer
    x = 39,630.66

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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.