Home / 76,657.57-115,009.86-39,244.15

Finding the Fourth Proportional to 76,657.57, 115,009.86 and 39,244.15

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Solution

The fourth proportional to 76,657.57, 115,009.86 and 39,244.15 is: 58,878.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,657.57 : 115,009.86 = 39,244.15 : x
  2. Step 2: Convert to fraction form
    76,657.57/115,009.86 = 39,244.15/x
  3. Step 3: Cross multiply
    76,657.57x = 115,009.86 × 39,244.15
  4. Step 4: Simplify right side
    76,657.57x = 4,513,464,197.32
  5. Step 5: Solve for x
    x = 4,513,464,197.32/76,657.57
  6. Step 6: Final answer
    x = 58,878.26

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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.