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Finding the Fourth Proportional to 86,331.48, 119,128.86 and 63,682.71

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Solution

The fourth proportional to 86,331.48, 119,128.86 and 63,682.71 is: 87,875.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,331.48 : 119,128.86 = 63,682.71 : x
  2. Step 2: Convert to fraction form
    86,331.48/119,128.86 = 63,682.71/x
  3. Step 3: Cross multiply
    86,331.48x = 119,128.86 × 63,682.71
  4. Step 4: Simplify right side
    86,331.48x = 7,586,448,644.01
  5. Step 5: Solve for x
    x = 7,586,448,644.01/86,331.48
  6. Step 6: Final answer
    x = 87,875.81

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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.