Home / 51,511.93-71,078.34-30,005.21

Finding the Fourth Proportional to 51,511.93, 71,078.34 and 30,005.21

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Solution

The fourth proportional to 51,511.93, 71,078.34 and 30,005.21 is: 41,402.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,511.93 : 71,078.34 = 30,005.21 : x
  2. Step 2: Convert to fraction form
    51,511.93/71,078.34 = 30,005.21/x
  3. Step 3: Cross multiply
    51,511.93x = 71,078.34 × 30,005.21
  4. Step 4: Simplify right side
    51,511.93x = 2,132,720,518.15
  5. Step 5: Solve for x
    x = 2,132,720,518.15/51,511.93
  6. Step 6: Final answer
    x = 41,402.46

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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.