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Finding the Fourth Proportional to 84,009.50, 115,932.77 and 45,768.94

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Solution

The fourth proportional to 84,009.50, 115,932.77 and 45,768.94 is: 63,160.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,009.50 : 115,932.77 = 45,768.94 : x
  2. Step 2: Convert to fraction form
    84,009.50/115,932.77 = 45,768.94/x
  3. Step 3: Cross multiply
    84,009.50x = 115,932.77 × 45,768.94
  4. Step 4: Simplify right side
    84,009.50x = 5,306,119,647.12
  5. Step 5: Solve for x
    x = 5,306,119,647.12/84,009.50
  6. Step 6: Final answer
    x = 63,160.94

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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.