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Finding the Fourth Proportional to 39,955.95, 55,138.96 and 22,050.96

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Solution

The fourth proportional to 39,955.95, 55,138.96 and 22,050.96 is: 30,430.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,955.95 : 55,138.96 = 22,050.96 : x
  2. Step 2: Convert to fraction form
    39,955.95/55,138.96 = 22,050.96/x
  3. Step 3: Cross multiply
    39,955.95x = 55,138.96 × 22,050.96
  4. Step 4: Simplify right side
    39,955.95x = 1,215,867,001.40
  5. Step 5: Solve for x
    x = 1,215,867,001.40/39,955.95
  6. Step 6: Final answer
    x = 30,430.19

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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.