Home / 42,688.89-63,902.12-36,390.33

Finding the Fourth Proportional to 42,688.89, 63,902.12 and 36,390.33

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Solution

The fourth proportional to 42,688.89, 63,902.12 and 36,390.33 is: 54,473.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,688.89 : 63,902.12 = 36,390.33 : x
  2. Step 2: Convert to fraction form
    42,688.89/63,902.12 = 36,390.33/x
  3. Step 3: Cross multiply
    42,688.89x = 63,902.12 × 36,390.33
  4. Step 4: Simplify right side
    42,688.89x = 2,325,419,052.55
  5. Step 5: Solve for x
    x = 2,325,419,052.55/42,688.89
  6. Step 6: Final answer
    x = 54,473.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.