Home / 84,018.29-115,943.78-45,778.15

Finding the Fourth Proportional to 84,018.29, 115,943.78 and 45,778.15

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Solution

The fourth proportional to 84,018.29, 115,943.78 and 45,778.15 is: 63,173.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,018.29 : 115,943.78 = 45,778.15 : x
  2. Step 2: Convert to fraction form
    84,018.29/115,943.78 = 45,778.15/x
  3. Step 3: Cross multiply
    84,018.29x = 115,943.78 × 45,778.15
  4. Step 4: Simplify right side
    84,018.29x = 5,307,692,337.87
  5. Step 5: Solve for x
    x = 5,307,692,337.87/84,018.29
  6. Step 6: Final answer
    x = 63,173.06

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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.