Home / 86,313.72-129,338.70-58,129.56

Finding the Fourth Proportional to 86,313.72, 129,338.70 and 58,129.56

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Solution

The fourth proportional to 86,313.72, 129,338.70 and 58,129.56 is: 87,105.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,313.72 : 129,338.70 = 58,129.56 : x
  2. Step 2: Convert to fraction form
    86,313.72/129,338.70 = 58,129.56/x
  3. Step 3: Cross multiply
    86,313.72x = 129,338.70 × 58,129.56
  4. Step 4: Simplify right side
    86,313.72x = 7,518,401,721.97
  5. Step 5: Solve for x
    x = 7,518,401,721.97/86,313.72
  6. Step 6: Final answer
    x = 87,105.52

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1.5x scale

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.