Home / 82,446.13-123,688.59-65,642.68

Finding the Fourth Proportional to 82,446.13, 123,688.59 and 65,642.68

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Solution

The fourth proportional to 82,446.13, 123,688.59 and 65,642.68 is: 98,479.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,446.13 : 123,688.59 = 65,642.68 : x
  2. Step 2: Convert to fraction form
    82,446.13/123,688.59 = 65,642.68/x
  3. Step 3: Cross multiply
    82,446.13x = 123,688.59 × 65,642.68
  4. Step 4: Simplify right side
    82,446.13x = 8,119,250,533.02
  5. Step 5: Solve for x
    x = 8,119,250,533.02/82,446.13
  6. Step 6: Final answer
    x = 98,479.46

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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.