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Finding the Fourth Proportional to 86,932, 119,973.45 and 55,089.28

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Solution

The fourth proportional to 86,932, 119,973.45 and 55,089.28 is: 76,027.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,932 : 119,973.45 = 55,089.28 : x
  2. Step 2: Convert to fraction form
    86,932/119,973.45 = 55,089.28/x
  3. Step 3: Cross multiply
    86,932x = 119,973.45 × 55,089.28
  4. Step 4: Simplify right side
    86,932x = 6,609,250,979.62
  5. Step 5: Solve for x
    x = 6,609,250,979.62/86,932
  6. Step 6: Final answer
    x = 76,027.83

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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.