Home / 87,784.08-121,157.80-49,555.28

Finding the Fourth Proportional to 87,784.08, 121,157.80 and 49,555.28

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Solution

The fourth proportional to 87,784.08, 121,157.80 and 49,555.28 is: 68,395.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,784.08 : 121,157.80 = 49,555.28 : x
  2. Step 2: Convert to fraction form
    87,784.08/121,157.80 = 49,555.28/x
  3. Step 3: Cross multiply
    87,784.08x = 121,157.80 × 49,555.28
  4. Step 4: Simplify right side
    87,784.08x = 6,004,008,703.18
  5. Step 5: Solve for x
    x = 6,004,008,703.18/87,784.08
  6. Step 6: Final answer
    x = 68,395.19

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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.