Home / 86,837.09-130,021.43-56,776.77

Finding the Fourth Proportional to 86,837.09, 130,021.43 and 56,776.77

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Solution

The fourth proportional to 86,837.09, 130,021.43 and 56,776.77 is: 85,012.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,837.09 : 130,021.43 = 56,776.77 : x
  2. Step 2: Convert to fraction form
    86,837.09/130,021.43 = 56,776.77/x
  3. Step 3: Cross multiply
    86,837.09x = 130,021.43 × 56,776.77
  4. Step 4: Simplify right side
    86,837.09x = 7,382,196,542.30
  5. Step 5: Solve for x
    x = 7,382,196,542.30/86,837.09
  6. Step 6: Final answer
    x = 85,012.03

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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.