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Finding the Fourth Proportional to 85,813.63, 118,398.81 and 67,607.83

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Solution

The fourth proportional to 85,813.63, 118,398.81 and 67,607.83 is: 93,279.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,813.63 : 118,398.81 = 67,607.83 : x
  2. Step 2: Convert to fraction form
    85,813.63/118,398.81 = 67,607.83/x
  3. Step 3: Cross multiply
    85,813.63x = 118,398.81 × 67,607.83
  4. Step 4: Simplify right side
    85,813.63x = 8,004,686,618.68
  5. Step 5: Solve for x
    x = 8,004,686,618.68/85,813.63
  6. Step 6: Final answer
    x = 93,279.90

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1.5x scale

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.