Home / 86,246.40-129,331.20-39,513.60

Finding the Fourth Proportional to 86,246.40, 129,331.20 and 39,513.60

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Solution

The fourth proportional to 86,246.40, 129,331.20 and 39,513.60 is: 59,252.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,246.40 : 129,331.20 = 39,513.60 : x
  2. Step 2: Convert to fraction form
    86,246.40/129,331.20 = 39,513.60/x
  3. Step 3: Cross multiply
    86,246.40x = 129,331.20 × 39,513.60
  4. Step 4: Simplify right side
    86,246.40x = 5,110,341,304.32
  5. Step 5: Solve for x
    x = 5,110,341,304.32/86,246.40
  6. Step 6: Final answer
    x = 59,252.81

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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.