Home / 51,430.20-77,145.30-31,644.60

Finding the Fourth Proportional to 51,430.20, 77,145.30 and 31,644.60

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Solution

The fourth proportional to 51,430.20, 77,145.30 and 31,644.60 is: 47,466.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,430.20 : 77,145.30 = 31,644.60 : x
  2. Step 2: Convert to fraction form
    51,430.20/77,145.30 = 31,644.60/x
  3. Step 3: Cross multiply
    51,430.20x = 77,145.30 × 31,644.60
  4. Step 4: Simplify right side
    51,430.20x = 2,441,232,160.38
  5. Step 5: Solve for x
    x = 2,441,232,160.38/51,430.20
  6. Step 6: Final answer
    x = 47,466.90

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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.