Home / 86,569.58-129,861.77-30,404.80

Finding the Fourth Proportional to 86,569.58, 129,861.77 and 30,404.80

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Solution

The fourth proportional to 86,569.58, 129,861.77 and 30,404.80 is: 45,609.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,569.58 : 129,861.77 = 30,404.80 : x
  2. Step 2: Convert to fraction form
    86,569.58/129,861.77 = 30,404.80/x
  3. Step 3: Cross multiply
    86,569.58x = 129,861.77 × 30,404.80
  4. Step 4: Simplify right side
    86,569.58x = 3,948,421,144.50
  5. Step 5: Solve for x
    x = 3,948,421,144.50/86,569.58
  6. Step 6: Final answer
    x = 45,609.80

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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.