Home / 42,640.20-63,902.70-37,686.60

Finding the Fourth Proportional to 42,640.20, 63,902.70 and 37,686.60

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Solution

The fourth proportional to 42,640.20, 63,902.70 and 37,686.60 is: 56,478.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,640.20 : 63,902.70 = 37,686.60 : x
  2. Step 2: Convert to fraction form
    42,640.20/63,902.70 = 37,686.60/x
  3. Step 3: Cross multiply
    42,640.20x = 63,902.70 × 37,686.60
  4. Step 4: Simplify right side
    42,640.20x = 2,408,275,493.82
  5. Step 5: Solve for x
    x = 2,408,275,493.82/42,640.20
  6. Step 6: Final answer
    x = 56,478.99

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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.