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Finding the Fourth Proportional to 85,809.96, 118,412.88 and 50,005.80

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Solution

The fourth proportional to 85,809.96, 118,412.88 and 50,005.80 is: 69,005.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,809.96 : 118,412.88 = 50,005.80 : x
  2. Step 2: Convert to fraction form
    85,809.96/118,412.88 = 50,005.80/x
  3. Step 3: Cross multiply
    85,809.96x = 118,412.88 × 50,005.80
  4. Step 4: Simplify right side
    85,809.96x = 5,921,330,794.70
  5. Step 5: Solve for x
    x = 5,921,330,794.70/85,809.96
  6. Step 6: Final answer
    x = 69,005.17

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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.