Home / 51,891.20-77,657.60-31,129.60

Finding the Fourth Proportional to 51,891.20, 77,657.60 and 31,129.60

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Solution

The fourth proportional to 51,891.20, 77,657.60 and 31,129.60 is: 46,586.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,891.20 : 77,657.60 = 31,129.60 : x
  2. Step 2: Convert to fraction form
    51,891.20/77,657.60 = 31,129.60/x
  3. Step 3: Cross multiply
    51,891.20x = 77,657.60 × 31,129.60
  4. Step 4: Simplify right side
    51,891.20x = 2,417,450,024.96
  5. Step 5: Solve for x
    x = 2,417,450,024.96/51,891.20
  6. Step 6: Final answer
    x = 46,586.90

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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.