Home / 86,928.12-119,918.48-56,699.73

Finding the Fourth Proportional to 86,928.12, 119,918.48 and 56,699.73

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Solution

The fourth proportional to 86,928.12, 119,918.48 and 56,699.73 is: 78,218.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,928.12 : 119,918.48 = 56,699.73 : x
  2. Step 2: Convert to fraction form
    86,928.12/119,918.48 = 56,699.73/x
  3. Step 3: Cross multiply
    86,928.12x = 119,918.48 × 56,699.73
  4. Step 4: Simplify right side
    86,928.12x = 6,799,345,154.51
  5. Step 5: Solve for x
    x = 6,799,345,154.51/86,928.12
  6. Step 6: Final answer
    x = 78,218.02

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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.