Home / 86,541.20-129,714.60-36,612.80

Finding the Fourth Proportional to 86,541.20, 129,714.60 and 36,612.80

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Solution

The fourth proportional to 86,541.20, 129,714.60 and 36,612.80 is: 54,878.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,541.20 : 129,714.60 = 36,612.80 : x
  2. Step 2: Convert to fraction form
    86,541.20/129,714.60 = 36,612.80/x
  3. Step 3: Cross multiply
    86,541.20x = 129,714.60 × 36,612.80
  4. Step 4: Simplify right side
    86,541.20x = 4,749,214,706.88
  5. Step 5: Solve for x
    x = 4,749,214,706.88/86,541.20
  6. Step 6: Final answer
    x = 54,878.08

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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.