Home / 87,670.90-120,983.41-49,430.12

Finding the Fourth Proportional to 87,670.90, 120,983.41 and 49,430.12

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Solution

The fourth proportional to 87,670.90, 120,983.41 and 49,430.12 is: 68,212.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,670.90 : 120,983.41 = 49,430.12 : x
  2. Step 2: Convert to fraction form
    87,670.90/120,983.41 = 49,430.12/x
  3. Step 3: Cross multiply
    87,670.90x = 120,983.41 × 49,430.12
  4. Step 4: Simplify right side
    87,670.90x = 5,980,224,474.31
  5. Step 5: Solve for x
    x = 5,980,224,474.31/87,670.90
  6. Step 6: Final answer
    x = 68,212.19

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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.