Home / 51,280.80-70,742.24-39,930.08

Finding the Fourth Proportional to 51,280.80, 70,742.24 and 39,930.08

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Solution

The fourth proportional to 51,280.80, 70,742.24 and 39,930.08 is: 55,083.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,280.80 : 70,742.24 = 39,930.08 : x
  2. Step 2: Convert to fraction form
    51,280.80/70,742.24 = 39,930.08/x
  3. Step 3: Cross multiply
    51,280.80x = 70,742.24 × 39,930.08
  4. Step 4: Simplify right side
    51,280.80x = 2,824,743,302.58
  5. Step 5: Solve for x
    x = 2,824,743,302.58/51,280.80
  6. Step 6: Final answer
    x = 55,083.84

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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.