Home / 86,538.20-129,880.20-33,985.40

Finding the Fourth Proportional to 86,538.20, 129,880.20 and 33,985.40

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Solution

The fourth proportional to 86,538.20, 129,880.20 and 33,985.40 is: 51,006.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,538.20 : 129,880.20 = 33,985.40 : x
  2. Step 2: Convert to fraction form
    86,538.20/129,880.20 = 33,985.40/x
  3. Step 3: Cross multiply
    86,538.20x = 129,880.20 × 33,985.40
  4. Step 4: Simplify right side
    86,538.20x = 4,414,030,549.08
  5. Step 5: Solve for x
    x = 4,414,030,549.08/86,538.20
  6. Step 6: Final answer
    x = 51,006.73

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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.