Home / 86,385.42-119,205.81-47,621.52

Finding the Fourth Proportional to 86,385.42, 119,205.81 and 47,621.52

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Solution

The fourth proportional to 86,385.42, 119,205.81 and 47,621.52 is: 65,714.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,385.42 : 119,205.81 = 47,621.52 : x
  2. Step 2: Convert to fraction form
    86,385.42/119,205.81 = 47,621.52/x
  3. Step 3: Cross multiply
    86,385.42x = 119,205.81 × 47,621.52
  4. Step 4: Simplify right side
    86,385.42x = 5,676,761,865.03
  5. Step 5: Solve for x
    x = 5,676,761,865.03/86,385.42
  6. Step 6: Final answer
    x = 65,714.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.