Home / 86,216.78-129,356.76-36,309.44

Finding the Fourth Proportional to 86,216.78, 129,356.76 and 36,309.44

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Solution

The fourth proportional to 86,216.78, 129,356.76 and 36,309.44 is: 54,477.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,216.78 : 129,356.76 = 36,309.44 : x
  2. Step 2: Convert to fraction form
    86,216.78/129,356.76 = 36,309.44/x
  3. Step 3: Cross multiply
    86,216.78x = 129,356.76 × 36,309.44
  4. Step 4: Simplify right side
    86,216.78x = 4,696,871,515.81
  5. Step 5: Solve for x
    x = 4,696,871,515.81/86,216.78
  6. Step 6: Final answer
    x = 54,477.46

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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.