Home / 86,116.12-118,841.92-47,878.86

Finding the Fourth Proportional to 86,116.12, 118,841.92 and 47,878.86

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Solution

The fourth proportional to 86,116.12, 118,841.92 and 47,878.86 is: 66,073.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,116.12 : 118,841.92 = 47,878.86 : x
  2. Step 2: Convert to fraction form
    86,116.12/118,841.92 = 47,878.86/x
  3. Step 3: Cross multiply
    86,116.12x = 118,841.92 × 47,878.86
  4. Step 4: Simplify right side
    86,116.12x = 5,690,015,649.81
  5. Step 5: Solve for x
    x = 5,690,015,649.81/86,116.12
  6. Step 6: Final answer
    x = 66,073.76

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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.