Home / 86,219.20-129,291.10-43,498.35

Finding the Fourth Proportional to 86,219.20, 129,291.10 and 43,498.35

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Solution

The fourth proportional to 86,219.20, 129,291.10 and 43,498.35 is: 65,228.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,219.20 : 129,291.10 = 43,498.35 : x
  2. Step 2: Convert to fraction form
    86,219.20/129,291.10 = 43,498.35/x
  3. Step 3: Cross multiply
    86,219.20x = 129,291.10 × 43,498.35
  4. Step 4: Simplify right side
    86,219.20x = 5,623,948,893.06
  5. Step 5: Solve for x
    x = 5,623,948,893.06/86,219.20
  6. Step 6: Final answer
    x = 65,228.50

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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.