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Finding the Fourth Proportional to 85,153.66, 117,623.01 and 69,080.71

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Solution

The fourth proportional to 85,153.66, 117,623.01 and 69,080.71 is: 95,421.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,153.66 : 117,623.01 = 69,080.71 : x
  2. Step 2: Convert to fraction form
    85,153.66/117,623.01 = 69,080.71/x
  3. Step 3: Cross multiply
    85,153.66x = 117,623.01 × 69,080.71
  4. Step 4: Simplify right side
    85,153.66x = 8,125,481,043.14
  5. Step 5: Solve for x
    x = 8,125,481,043.14/85,153.66
  6. Step 6: Final answer
    x = 95,421.40

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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.