Home / 76,781.56-106,023.85-48,149.18

Finding the Fourth Proportional to 76,781.56, 106,023.85 and 48,149.18

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Solution

The fourth proportional to 76,781.56, 106,023.85 and 48,149.18 is: 66,486.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,781.56 : 106,023.85 = 48,149.18 : x
  2. Step 2: Convert to fraction form
    76,781.56/106,023.85 = 48,149.18/x
  3. Step 3: Cross multiply
    76,781.56x = 106,023.85 × 48,149.18
  4. Step 4: Simplify right side
    76,781.56x = 5,104,960,907.82
  5. Step 5: Solve for x
    x = 5,104,960,907.82/76,781.56
  6. Step 6: Final answer
    x = 66,486.81

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1.5x scale

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.