Home / 40,159.79-55,420.64-22,255.09

Finding the Fourth Proportional to 40,159.79, 55,420.64 and 22,255.09

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Solution

The fourth proportional to 40,159.79, 55,420.64 and 22,255.09 is: 30,712.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,159.79 : 55,420.64 = 22,255.09 : x
  2. Step 2: Convert to fraction form
    40,159.79/55,420.64 = 22,255.09/x
  3. Step 3: Cross multiply
    40,159.79x = 55,420.64 × 22,255.09
  4. Step 4: Simplify right side
    40,159.79x = 1,233,391,331.06
  5. Step 5: Solve for x
    x = 1,233,391,331.06/40,159.79
  6. Step 6: Final answer
    x = 30,712.10

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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.