Home / 90,051.12-124,264.34-49,764.50

Finding the Fourth Proportional to 90,051.12, 124,264.34 and 49,764.50

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Solution

The fourth proportional to 90,051.12, 124,264.34 and 49,764.50 is: 68,671.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,051.12 : 124,264.34 = 49,764.50 : x
  2. Step 2: Convert to fraction form
    90,051.12/124,264.34 = 49,764.50/x
  3. Step 3: Cross multiply
    90,051.12x = 124,264.34 × 49,764.50
  4. Step 4: Simplify right side
    90,051.12x = 6,183,952,747.93
  5. Step 5: Solve for x
    x = 6,183,952,747.93/90,051.12
  6. Step 6: Final answer
    x = 68,671.58

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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.