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Finding the Fourth Proportional to 84,689.58, 127,057.59 and 68,855.22

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Solution

The fourth proportional to 84,689.58, 127,057.59 and 68,855.22 is: 103,301.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,689.58 : 127,057.59 = 68,855.22 : x
  2. Step 2: Convert to fraction form
    84,689.58/127,057.59 = 68,855.22/x
  3. Step 3: Cross multiply
    84,689.58x = 127,057.59 × 68,855.22
  4. Step 4: Simplify right side
    84,689.58x = 8,748,578,312.12
  5. Step 5: Solve for x
    x = 8,748,578,312.12/84,689.58
  6. Step 6: Final answer
    x = 103,301.71

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1.5x scale

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.