Home / 84,491.04-126,618.12-65,685

Finding the Fourth Proportional to 84,491.04, 126,618.12 and 65,685

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Solution

The fourth proportional to 84,491.04, 126,618.12 and 65,685 is: 98,435.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,491.04 : 126,618.12 = 65,685 : x
  2. Step 2: Convert to fraction form
    84,491.04/126,618.12 = 65,685/x
  3. Step 3: Cross multiply
    84,491.04x = 126,618.12 × 65,685
  4. Step 4: Simplify right side
    84,491.04x = 8,316,911,212.20
  5. Step 5: Solve for x
    x = 8,316,911,212.20/84,491.04
  6. Step 6: Final answer
    x = 98,435.42

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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.