Home / 87,663.20-120,880.08-55,791.32

Finding the Fourth Proportional to 87,663.20, 120,880.08 and 55,791.32

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Solution

The fourth proportional to 87,663.20, 120,880.08 and 55,791.32 is: 76,931.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,663.20 : 120,880.08 = 55,791.32 : x
  2. Step 2: Convert to fraction form
    87,663.20/120,880.08 = 55,791.32/x
  3. Step 3: Cross multiply
    87,663.20x = 120,880.08 × 55,791.32
  4. Step 4: Simplify right side
    87,663.20x = 6,744,058,620.51
  5. Step 5: Solve for x
    x = 6,744,058,620.51/87,663.20
  6. Step 6: Final answer
    x = 76,931.47

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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.