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Finding the Fourth Proportional to 81,339.88, 112,247.94 and 45,529.89

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Solution

The fourth proportional to 81,339.88, 112,247.94 and 45,529.89 is: 62,830.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,339.88 : 112,247.94 = 45,529.89 : x
  2. Step 2: Convert to fraction form
    81,339.88/112,247.94 = 45,529.89/x
  3. Step 3: Cross multiply
    81,339.88x = 112,247.94 × 45,529.89
  4. Step 4: Simplify right side
    81,339.88x = 5,110,636,360.93
  5. Step 5: Solve for x
    x = 5,110,636,360.93/81,339.88
  6. Step 6: Final answer
    x = 62,830.64

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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.