Home / 40,220.40-55,558.26-30,905.40

Finding the Fourth Proportional to 40,220.40, 55,558.26 and 30,905.40

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Solution

The fourth proportional to 40,220.40, 55,558.26 and 30,905.40 is: 42,691.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,220.40 : 55,558.26 = 30,905.40 : x
  2. Step 2: Convert to fraction form
    40,220.40/55,558.26 = 30,905.40/x
  3. Step 3: Cross multiply
    40,220.40x = 55,558.26 × 30,905.40
  4. Step 4: Simplify right side
    40,220.40x = 1,717,050,248.60
  5. Step 5: Solve for x
    x = 1,717,050,248.60/40,220.40
  6. Step 6: Final answer
    x = 42,691.03

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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.