Home / 82,935.20-114,475.74-78,703.76

Finding the Fourth Proportional to 82,935.20, 114,475.74 and 78,703.76

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Solution

The fourth proportional to 82,935.20, 114,475.74 and 78,703.76 is: 108,635.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,935.20 : 114,475.74 = 78,703.76 : x
  2. Step 2: Convert to fraction form
    82,935.20/114,475.74 = 78,703.76/x
  3. Step 3: Cross multiply
    82,935.20x = 114,475.74 × 78,703.76
  4. Step 4: Simplify right side
    82,935.20x = 9,009,671,166.78
  5. Step 5: Solve for x
    x = 9,009,671,166.78/82,935.20
  6. Step 6: Final answer
    x = 108,635.07

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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.