Home / 78,741.36-118,077.38-28,808.49

Finding the Fourth Proportional to 78,741.36, 118,077.38 and 28,808.49

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Solution

The fourth proportional to 78,741.36, 118,077.38 and 28,808.49 is: 43,200.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,741.36 : 118,077.38 = 28,808.49 : x
  2. Step 2: Convert to fraction form
    78,741.36/118,077.38 = 28,808.49/x
  3. Step 3: Cross multiply
    78,741.36x = 118,077.38 × 28,808.49
  4. Step 4: Simplify right side
    78,741.36x = 3,401,630,876.91
  5. Step 5: Solve for x
    x = 3,401,630,876.91/78,741.36
  6. Step 6: Final answer
    x = 43,200.05

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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.