Home / 51,256.80-76,712.40-47,109.60

Finding the Fourth Proportional to 51,256.80, 76,712.40 and 47,109.60

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Solution

The fourth proportional to 51,256.80, 76,712.40 and 47,109.60 is: 70,505.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,256.80 : 76,712.40 = 47,109.60 : x
  2. Step 2: Convert to fraction form
    51,256.80/76,712.40 = 47,109.60/x
  3. Step 3: Cross multiply
    51,256.80x = 76,712.40 × 47,109.60
  4. Step 4: Simplify right side
    51,256.80x = 3,613,890,479.04
  5. Step 5: Solve for x
    x = 3,613,890,479.04/51,256.80
  6. Step 6: Final answer
    x = 70,505.58

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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.