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Finding the Fourth Proportional to 85,035.51, 127,550.43 and 45,669.51

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Solution

The fourth proportional to 85,035.51, 127,550.43 and 45,669.51 is: 68,502.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,035.51 : 127,550.43 = 45,669.51 : x
  2. Step 2: Convert to fraction form
    85,035.51/127,550.43 = 45,669.51/x
  3. Step 3: Cross multiply
    85,035.51x = 127,550.43 × 45,669.51
  4. Step 4: Simplify right side
    85,035.51x = 5,825,165,638.39
  5. Step 5: Solve for x
    x = 5,825,165,638.39/85,035.51
  6. Step 6: Final answer
    x = 68,502.74

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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.