Home / 86,368.43-129,260.03-53,109.56

Finding the Fourth Proportional to 86,368.43, 129,260.03 and 53,109.56

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Solution

The fourth proportional to 86,368.43, 129,260.03 and 53,109.56 is: 79,484.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,368.43 : 129,260.03 = 53,109.56 : x
  2. Step 2: Convert to fraction form
    86,368.43/129,260.03 = 53,109.56/x
  3. Step 3: Cross multiply
    86,368.43x = 129,260.03 × 53,109.56
  4. Step 4: Simplify right side
    86,368.43x = 6,864,942,407.04
  5. Step 5: Solve for x
    x = 6,864,942,407.04/86,368.43
  6. Step 6: Final answer
    x = 79,484.40

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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.