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Finding the Fourth Proportional to 90,005.98, 124,209.22 and 49,720.82

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Solution

The fourth proportional to 90,005.98, 124,209.22 and 49,720.82 is: 68,615.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,005.98 : 124,209.22 = 49,720.82 : x
  2. Step 2: Convert to fraction form
    90,005.98/124,209.22 = 49,720.82/x
  3. Step 3: Cross multiply
    90,005.98x = 124,209.22 × 49,720.82
  4. Step 4: Simplify right side
    90,005.98x = 6,175,784,269.96
  5. Step 5: Solve for x
    x = 6,175,784,269.96/90,005.98
  6. Step 6: Final answer
    x = 68,615.27

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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.