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Finding the Fourth Proportional to 86,558.40, 129,813.30 and 27,412.20

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Solution

The fourth proportional to 86,558.40, 129,813.30 and 27,412.20 is: 41,110.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,558.40 : 129,813.30 = 27,412.20 : x
  2. Step 2: Convert to fraction form
    86,558.40/129,813.30 = 27,412.20/x
  3. Step 3: Cross multiply
    86,558.40x = 129,813.30 × 27,412.20
  4. Step 4: Simplify right side
    86,558.40x = 3,558,468,142.26
  5. Step 5: Solve for x
    x = 3,558,468,142.26/86,558.40
  6. Step 6: Final answer
    x = 41,110.60

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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.