Home / 86,007.47-129,011.07-56,418.27

Finding the Fourth Proportional to 86,007.47, 129,011.07 and 56,418.27

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Solution

The fourth proportional to 86,007.47, 129,011.07 and 56,418.27 is: 84,627.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,007.47 : 129,011.07 = 56,418.27 : x
  2. Step 2: Convert to fraction form
    86,007.47/129,011.07 = 56,418.27/x
  3. Step 3: Cross multiply
    86,007.47x = 129,011.07 × 56,418.27
  4. Step 4: Simplify right side
    86,007.47x = 7,278,581,380.25
  5. Step 5: Solve for x
    x = 7,278,581,380.25/86,007.47
  6. Step 6: Final answer
    x = 84,627.32

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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.