Home / 90,042.72-124,267.68-49,765.92

Finding the Fourth Proportional to 90,042.72, 124,267.68 and 49,765.92

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Solution

The fourth proportional to 90,042.72, 124,267.68 and 49,765.92 is: 68,681.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,042.72 : 124,267.68 = 49,765.92 : x
  2. Step 2: Convert to fraction form
    90,042.72/124,267.68 = 49,765.92/x
  3. Step 3: Cross multiply
    90,042.72x = 124,267.68 × 49,765.92
  4. Step 4: Simplify right side
    90,042.72x = 6,184,295,421.47
  5. Step 5: Solve for x
    x = 6,184,295,421.47/90,042.72
  6. Step 6: Final answer
    x = 68,681.79

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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.