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Finding the Fourth Proportional to 77,480.39, 116,220.38 and 43,731.11

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Solution

The fourth proportional to 77,480.39, 116,220.38 and 43,731.11 is: 65,596.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,480.39 : 116,220.38 = 43,731.11 : x
  2. Step 2: Convert to fraction form
    77,480.39/116,220.38 = 43,731.11/x
  3. Step 3: Cross multiply
    77,480.39x = 116,220.38 × 43,731.11
  4. Step 4: Simplify right side
    77,480.39x = 5,082,445,750.25
  5. Step 5: Solve for x
    x = 5,082,445,750.25/77,480.39
  6. Step 6: Final answer
    x = 65,596.55

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1.5x scale

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.