Home / 87,369.32-120,569.03-49,643.57

Finding the Fourth Proportional to 87,369.32, 120,569.03 and 49,643.57

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Solution

The fourth proportional to 87,369.32, 120,569.03 and 49,643.57 is: 68,507.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,369.32 : 120,569.03 = 49,643.57 : x
  2. Step 2: Convert to fraction form
    87,369.32/120,569.03 = 49,643.57/x
  3. Step 3: Cross multiply
    87,369.32x = 120,569.03 × 49,643.57
  4. Step 4: Simplify right side
    87,369.32x = 5,985,477,080.64
  5. Step 5: Solve for x
    x = 5,985,477,080.64/87,369.32
  6. Step 6: Final answer
    x = 68,507.77

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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.