Home / 78,997.77-118,536.75-45,748.08

Finding the Fourth Proportional to 78,997.77, 118,536.75 and 45,748.08

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Solution

The fourth proportional to 78,997.77, 118,536.75 and 45,748.08 is: 68,645.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,997.77 : 118,536.75 = 45,748.08 : x
  2. Step 2: Convert to fraction form
    78,997.77/118,536.75 = 45,748.08/x
  3. Step 3: Cross multiply
    78,997.77x = 118,536.75 × 45,748.08
  4. Step 4: Simplify right side
    78,997.77x = 5,422,828,721.94
  5. Step 5: Solve for x
    x = 5,422,828,721.94/78,997.77
  6. Step 6: Final answer
    x = 68,645.34

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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.