Home / 87,039.63-120,182.54-66,864.56

Finding the Fourth Proportional to 87,039.63, 120,182.54 and 66,864.56

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Solution

The fourth proportional to 87,039.63, 120,182.54 and 66,864.56 is: 92,325.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,039.63 : 120,182.54 = 66,864.56 : x
  2. Step 2: Convert to fraction form
    87,039.63/120,182.54 = 66,864.56/x
  3. Step 3: Cross multiply
    87,039.63x = 120,182.54 × 66,864.56
  4. Step 4: Simplify right side
    87,039.63x = 8,035,951,721.55
  5. Step 5: Solve for x
    x = 8,035,951,721.55/87,039.63
  6. Step 6: Final answer
    x = 92,325.21

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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.