Home / 86,278.83-129,392.70-38,866.51

Finding the Fourth Proportional to 86,278.83, 129,392.70 and 38,866.51

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Solution

The fourth proportional to 86,278.83, 129,392.70 and 38,866.51 is: 58,288.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,278.83 : 129,392.70 = 38,866.51 : x
  2. Step 2: Convert to fraction form
    86,278.83/129,392.70 = 38,866.51/x
  3. Step 3: Cross multiply
    86,278.83x = 129,392.70 × 38,866.51
  4. Step 4: Simplify right side
    86,278.83x = 5,029,042,668.48
  5. Step 5: Solve for x
    x = 5,029,042,668.48/86,278.83
  6. Step 6: Final answer
    x = 58,288.26

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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.