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Finding the Fourth Proportional to 90,051.80, 124,270.92 and 49,767.89

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Solution

The fourth proportional to 90,051.80, 124,270.92 and 49,767.89 is: 68,679.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,051.80 : 124,270.92 = 49,767.89 : x
  2. Step 2: Convert to fraction form
    90,051.80/124,270.92 = 49,767.89/x
  3. Step 3: Cross multiply
    90,051.80x = 124,270.92 × 49,767.89
  4. Step 4: Simplify right side
    90,051.80x = 6,184,700,855.40
  5. Step 5: Solve for x
    x = 6,184,700,855.40/90,051.80
  6. Step 6: Final answer
    x = 68,679.37

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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.