Home / 51,287.78-70,777.20-28,317.62

Finding the Fourth Proportional to 51,287.78, 70,777.20 and 28,317.62

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Solution

The fourth proportional to 51,287.78, 70,777.20 and 28,317.62 is: 39,078.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,287.78 : 70,777.20 = 28,317.62 : x
  2. Step 2: Convert to fraction form
    51,287.78/70,777.20 = 28,317.62/x
  3. Step 3: Cross multiply
    51,287.78x = 70,777.20 × 28,317.62
  4. Step 4: Simplify right side
    51,287.78x = 2,004,241,854.26
  5. Step 5: Solve for x
    x = 2,004,241,854.26/51,287.78
  6. Step 6: Final answer
    x = 39,078.35

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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.