Home / 86,005.97-129,008.82-56,416.76

Finding the Fourth Proportional to 86,005.97, 129,008.82 and 56,416.76

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Solution

The fourth proportional to 86,005.97, 129,008.82 and 56,416.76 is: 84,625.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,005.97 : 129,008.82 = 56,416.76 : x
  2. Step 2: Convert to fraction form
    86,005.97/129,008.82 = 56,416.76/x
  3. Step 3: Cross multiply
    86,005.97x = 129,008.82 × 56,416.76
  4. Step 4: Simplify right side
    86,005.97x = 7,278,258,990.78
  5. Step 5: Solve for x
    x = 7,278,258,990.78/86,005.97
  6. Step 6: Final answer
    x = 84,625.05

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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.