Home / 86,069.10-128,864.21-43,858.18

Finding the Fourth Proportional to 86,069.10, 128,864.21 and 43,858.18

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Solution

The fourth proportional to 86,069.10, 128,864.21 and 43,858.18 is: 65,665.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,069.10 : 128,864.21 = 43,858.18 : x
  2. Step 2: Convert to fraction form
    86,069.10/128,864.21 = 43,858.18/x
  3. Step 3: Cross multiply
    86,069.10x = 128,864.21 × 43,858.18
  4. Step 4: Simplify right side
    86,069.10x = 5,651,748,854.13
  5. Step 5: Solve for x
    x = 5,651,748,854.13/86,069.10
  6. Step 6: Final answer
    x = 65,665.25

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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.