Home / 86,409.39-129,665.10-36,486.24

Finding the Fourth Proportional to 86,409.39, 129,665.10 and 36,486.24

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Solution

The fourth proportional to 86,409.39, 129,665.10 and 36,486.24 is: 54,750.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,409.39 : 129,665.10 = 36,486.24 : x
  2. Step 2: Convert to fraction form
    86,409.39/129,665.10 = 36,486.24/x
  3. Step 3: Cross multiply
    86,409.39x = 129,665.10 × 36,486.24
  4. Step 4: Simplify right side
    86,409.39x = 4,730,991,958.22
  5. Step 5: Solve for x
    x = 4,730,991,958.22/86,409.39
  6. Step 6: Final answer
    x = 54,750.90

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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.