Home / 71,811.12-99,124.92-51,679.92

Finding the Fourth Proportional to 71,811.12, 99,124.92 and 51,679.92

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Solution

The fourth proportional to 71,811.12, 99,124.92 and 51,679.92 is: 71,336.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,811.12 : 99,124.92 = 51,679.92 : x
  2. Step 2: Convert to fraction form
    71,811.12/99,124.92 = 51,679.92/x
  3. Step 3: Cross multiply
    71,811.12x = 99,124.92 × 51,679.92
  4. Step 4: Simplify right side
    71,811.12x = 5,122,767,935.61
  5. Step 5: Solve for x
    x = 5,122,767,935.61/71,811.12
  6. Step 6: Final answer
    x = 71,336.69

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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.