Home / 86,628.57-129,953.79-30,455.48

Finding the Fourth Proportional to 86,628.57, 129,953.79 and 30,455.48

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Solution

The fourth proportional to 86,628.57, 129,953.79 and 30,455.48 is: 45,687.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,628.57 : 129,953.79 = 30,455.48 : x
  2. Step 2: Convert to fraction form
    86,628.57/129,953.79 = 30,455.48/x
  3. Step 3: Cross multiply
    86,628.57x = 129,953.79 × 30,455.48
  4. Step 4: Simplify right side
    86,628.57x = 3,957,804,402.50
  5. Step 5: Solve for x
    x = 3,957,804,402.50/86,628.57
  6. Step 6: Final answer
    x = 45,687.06

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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.