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Finding the Fourth Proportional to 51,203.90, 70,661.22 and 29,978.93

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Solution

The fourth proportional to 51,203.90, 70,661.22 and 29,978.93 is: 41,370.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,203.90 : 70,661.22 = 29,978.93 : x
  2. Step 2: Convert to fraction form
    51,203.90/70,661.22 = 29,978.93/x
  3. Step 3: Cross multiply
    51,203.90x = 70,661.22 × 29,978.93
  4. Step 4: Simplify right side
    51,203.90x = 2,118,347,768.09
  5. Step 5: Solve for x
    x = 2,118,347,768.09/51,203.90
  6. Step 6: Final answer
    x = 41,370.83

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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.