Home / 86,520.69-129,780.27-27,356.40

Finding the Fourth Proportional to 86,520.69, 129,780.27 and 27,356.40

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Solution

The fourth proportional to 86,520.69, 129,780.27 and 27,356.40 is: 41,034.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,520.69 : 129,780.27 = 27,356.40 : x
  2. Step 2: Convert to fraction form
    86,520.69/129,780.27 = 27,356.40/x
  3. Step 3: Cross multiply
    86,520.69x = 129,780.27 × 27,356.40
  4. Step 4: Simplify right side
    86,520.69x = 3,550,320,978.23
  5. Step 5: Solve for x
    x = 3,550,320,978.23/86,520.69
  6. Step 6: Final answer
    x = 41,034.36

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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.