Home / 82,395.23-123,378.39-70,624.31

Finding the Fourth Proportional to 82,395.23, 123,378.39 and 70,624.31

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Solution

The fourth proportional to 82,395.23, 123,378.39 and 70,624.31 is: 105,752.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,395.23 : 123,378.39 = 70,624.31 : x
  2. Step 2: Convert to fraction form
    82,395.23/123,378.39 = 70,624.31/x
  3. Step 3: Cross multiply
    82,395.23x = 123,378.39 × 70,624.31
  4. Step 4: Simplify right side
    82,395.23x = 8,713,513,045.77
  5. Step 5: Solve for x
    x = 8,713,513,045.77/82,395.23
  6. Step 6: Final answer
    x = 105,752.65

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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.