Home / 85,788.86-118,240.77-57,057.14

Finding the Fourth Proportional to 85,788.86, 118,240.77 and 57,057.14

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Solution

The fourth proportional to 85,788.86, 118,240.77 and 57,057.14 is: 78,640.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,788.86 : 118,240.77 = 57,057.14 : x
  2. Step 2: Convert to fraction form
    85,788.86/118,240.77 = 57,057.14/x
  3. Step 3: Cross multiply
    85,788.86x = 118,240.77 × 57,057.14
  4. Step 4: Simplify right side
    85,788.86x = 6,746,480,167.60
  5. Step 5: Solve for x
    x = 6,746,480,167.60/85,788.86
  6. Step 6: Final answer
    x = 78,640.52

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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.