Home / 87,334.20-120,430.80-64,735.20

Finding the Fourth Proportional to 87,334.20, 120,430.80 and 64,735.20

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Solution

The fourth proportional to 87,334.20, 120,430.80 and 64,735.20 is: 89,267.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,334.20 : 120,430.80 = 64,735.20 : x
  2. Step 2: Convert to fraction form
    87,334.20/120,430.80 = 64,735.20/x
  3. Step 3: Cross multiply
    87,334.20x = 120,430.80 × 64,735.20
  4. Step 4: Simplify right side
    87,334.20x = 7,796,111,924.16
  5. Step 5: Solve for x
    x = 7,796,111,924.16/87,334.20
  6. Step 6: Final answer
    x = 89,267.57

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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.