Home / 51,404.40-77,128.20-28,047.60

Finding the Fourth Proportional to 51,404.40, 77,128.20 and 28,047.60

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Solution

The fourth proportional to 51,404.40, 77,128.20 and 28,047.60 is: 42,083.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,404.40 : 77,128.20 = 28,047.60 : x
  2. Step 2: Convert to fraction form
    51,404.40/77,128.20 = 28,047.60/x
  3. Step 3: Cross multiply
    51,404.40x = 77,128.20 × 28,047.60
  4. Step 4: Simplify right side
    51,404.40x = 2,163,260,902.32
  5. Step 5: Solve for x
    x = 2,163,260,902.32/51,404.40
  6. Step 6: Final answer
    x = 42,083.19

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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.