Home / 86,420.17-119,235-56,249.89

Finding the Fourth Proportional to 86,420.17, 119,235 and 56,249.89

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Solution

The fourth proportional to 86,420.17, 119,235 and 56,249.89 is: 77,608.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,420.17 : 119,235 = 56,249.89 : x
  2. Step 2: Convert to fraction form
    86,420.17/119,235 = 56,249.89/x
  3. Step 3: Cross multiply
    86,420.17x = 119,235 × 56,249.89
  4. Step 4: Simplify right side
    86,420.17x = 6,706,955,634.15
  5. Step 5: Solve for x
    x = 6,706,955,634.15/86,420.17
  6. Step 6: Final answer
    x = 77,608.68

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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.