Home / 86,155.11-118,899.50-48,431.79

Finding the Fourth Proportional to 86,155.11, 118,899.50 and 48,431.79

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Solution

The fourth proportional to 86,155.11, 118,899.50 and 48,431.79 is: 66,838.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,155.11 : 118,899.50 = 48,431.79 : x
  2. Step 2: Convert to fraction form
    86,155.11/118,899.50 = 48,431.79/x
  3. Step 3: Cross multiply
    86,155.11x = 118,899.50 × 48,431.79
  4. Step 4: Simplify right side
    86,155.11x = 5,758,515,372.95
  5. Step 5: Solve for x
    x = 5,758,515,372.95/86,155.11
  6. Step 6: Final answer
    x = 66,838.93

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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.