Home / 86,634.12-129,864.78-51,590.28

Finding the Fourth Proportional to 86,634.12, 129,864.78 and 51,590.28

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Solution

The fourth proportional to 86,634.12, 129,864.78 and 51,590.28 is: 77,333.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,634.12 : 129,864.78 = 51,590.28 : x
  2. Step 2: Convert to fraction form
    86,634.12/129,864.78 = 51,590.28/x
  3. Step 3: Cross multiply
    86,634.12x = 129,864.78 × 51,590.28
  4. Step 4: Simplify right side
    86,634.12x = 6,699,760,362.34
  5. Step 5: Solve for x
    x = 6,699,760,362.34/86,634.12
  6. Step 6: Final answer
    x = 77,333.97

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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.