Home / 81,315.77-122,043.72-56,373.34

Finding the Fourth Proportional to 81,315.77, 122,043.72 and 56,373.34

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Solution

The fourth proportional to 81,315.77, 122,043.72 and 56,373.34 is: 84,608.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,315.77 : 122,043.72 = 56,373.34 : x
  2. Step 2: Convert to fraction form
    81,315.77/122,043.72 = 56,373.34/x
  3. Step 3: Cross multiply
    81,315.77x = 122,043.72 × 56,373.34
  4. Step 4: Simplify right side
    81,315.77x = 6,880,012,122.42
  5. Step 5: Solve for x
    x = 6,880,012,122.42/81,315.77
  6. Step 6: Final answer
    x = 84,608.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.