Home / 86,609.84-119,537.40-72,440.24

Finding the Fourth Proportional to 86,609.84, 119,537.40 and 72,440.24

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Solution

The fourth proportional to 86,609.84, 119,537.40 and 72,440.24 is: 99,980.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,609.84 : 119,537.40 = 72,440.24 : x
  2. Step 2: Convert to fraction form
    86,609.84/119,537.40 = 72,440.24/x
  3. Step 3: Cross multiply
    86,609.84x = 119,537.40 × 72,440.24
  4. Step 4: Simplify right side
    86,609.84x = 8,659,317,944.98
  5. Step 5: Solve for x
    x = 8,659,317,944.98/86,609.84
  6. Step 6: Final answer
    x = 99,980.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.